Answer: there should be 80 blacks
Step-by-step explanation:
i promise
Please Help :))) If DE| |AB, by the Side Splitter Theorem, ...
If DE| |AB, by the Side Splitter Theorem, We can conclude that DE is parallel to AB if and only if CD/DA = CE/EB or x/y = z/w.
What is Side Splitter Theorem?The Side Splitter Theorem is a geometric theorem that relates the lengths of the sides of a triangle and the segments formed when a line is drawn parallel to one of the sides of the triangle.
Specifically, if a line is drawn parallel to one side of a triangle, then it divides the other two sides proportionally.
In other words, if a line intersects two sides of a triangle and is parallel to the third side, then the lengths of the segments it divides on the other two sides are proportional to the lengths of those sides.
If DE is parallel to AB, then by the Side Splitter Theorem, we have:
CD/DA = CE/EB
Substituting the given variables, we get:
x/y = z/w
We can also use the fact that triangles CDE and ABC are similar, which implies that their corresponding sides are proportional. Specifically, we have:
CD/AB = CE/AC = DE/BC
Substituting the given variables and using the fact that CD = x, DA = y, CE = z, and EB = w, we get:
x/(y+w) = z/(x+z)
Cross-multiplying both equations, we get:
xy + xw = yz + xz
Simplifying, we get:
x(w+z) = yz
Dividing both sides by wz, we get:
x/y = z/w
Which is the same as the equation we obtained using the Side Splitter Theorem.
To know more about triangles visit:
https://brainly.com/question/30066983
#SPJ1
at 3:00 pm, andy began walking directly south from point a at a rate of 4 mi/h. at the same time, bill started walking directly west from point b to point a, at a rate of 5 mi/h. the distance between a and b is 9 miles. assume that both of them stop walking when bill reaches point a. at what time will be distance between andy and bill be minimized? round your answer to the nearest minute.
At 4:00 PM, the distance between Andy and Bill is minimal, about 6.04 miles apart.
Pythagorean theorem is used to find the distance between Andy and Bill at any point in time.
Suppose 3 t hours have passed.
12:00 am.
At that point, Andy moved a remove of 4 miles south from point A, and Charge moved a remove of 5 miles west of point B.
The separation between Andy and Charge is given by
[tex]D(t) = sqrt[(9 - 5t)^2 + (4t)^2][/tex]
To find the time when the distance between Andy and Bill is minimal, we need to find the value of t that minimizes D(t).
To do this, find the derivative of D(t) with respect to t, set it to zero, and solve for t.
dD/dt = (1/2)[2(9 - 5t)(-5) + 2(4t)*(4)]
= -45 + 16t
Setting dD/dt = 0 gives: -45 + 16t = 0
Solving for t gives: t = 45/16 ≈ 2.81 hours
Therefore, the time at which the distance between Andy and Bill is minimal is 3.
48 hours (rounded to the nearest minute).
Note that at this point Andy has traveled a remove of 42.81 = 11.24 miles south of point A, and Charge has traveled a remove of 52.81 = 14.05 miles west of point B.
The separations between them are:
[tex]D(2.81) = sqrt[(9 - 52.81)^2 + (42.81)^2] ≈ 6.04 miles[/tex]
therefore, At 4:00 PM, the distance between Andy and Bill is minimal, about 6.04 miles apart.
learn more about the Pythagorean theorem
brainly.com/question/14930619
#SPJ4
A small radio transmitter broadcasts in a 40 mile radius. If you drive along a straight line from a city 55
miles north of the transmitter to a second city 51 miles east of the transmitter, during how much of the
drive will you pick up a signal from the transmitter?
miles
Answer:
We can use the Pythagorean theorem to find the distance between the transmitter and the second city:
c² = a² + b²
c² = 55² + 51²
c² = 3026
c ≈ 55.01
So the transmitter is about 55.01 miles away from the second city.
To determine how much of the drive will pick up a signal, we can draw a circle with a radius of 40 miles centered at the transmitter, and see which part of the line connecting the two cities is within this circle.
We can see that the line connecting the two cities intersects the circle at two points, forming a right triangle with one leg measuring 40 miles. We can use trigonometry to find the length of the other leg:
sin(theta) = opposite/hypotenuse
sin(theta) = 40/c
csin(theta) = 40
a = csin(theta)
a = 55.01*sin(theta)
Now we need to find the angle theta, which can be found using inverse tangent:
tan(theta) = opposite/adjacent
tan(theta) = 55/51
theta = tan⁻¹(55/51)
theta ≈ 49.72 degrees
So we can substitute this value of theta into the equation we found earlier for a:
a ≈ 43.89
Therefore, the length of the line segment within the circle is approximately 43.89 miles. To find the length of the entire line segment connecting the two cities, we can use the Pythagorean theorem again:
b² = c² - a²
b² = 55.01² - 43.89²
b ≈ 33.6
So the entire length of the line segment connecting the two cities is approximately 33.6 miles. Therefore, the portion of the drive during which you will pick up a signal from the transmitter is 43.89/33.6 = 1.31 hours or about 79 minutes.
a person wants to know the true proportion of customers that write a review. the owner randomly selects a random sample of 560 customers and only 340 of them wrote a review. when calculating a 90% confidence interval, what is the margin of error used:
The margin of error used in calculating the 90% confidence interval for the true proportion of customers who write a review is 0.043.
To calculate the margin of error, we first need to find the sample proportion of customers who wrote a review:
sample proportion[tex]\hat p =\frac{ 340}{560} = 0.607[/tex]
Next, we can use the following formula to calculate the margin of error:
margin of error [tex]= z* \sqrt{(\hat p * (1-\hat p) / n)[/tex]
where z* is the z-score associated with the desired level of confidence (90% in this case), and n is the sample size.
The z-score for a 90% confidence interval is 1.645. Plugging in the values, we get:
margin of error =[tex]1.645 * \sqrt{(0.607 * (1-0.607) / 560)[/tex]
= 0.043
Therefore, the margin of error used in calculating the 90% confidence interval for the true proportion of customers who write a review is 0.043.
learn more about confidence interval
https://brainly.com/question/24131141
#SPJ11
we randomly select 100 pell grant recipients from two states. state a is a relatively small state with approximately 4,000 pell grant recipients. state b is a large state with approximately 200,000 pell grant recipients. suppose that the mean and standard deviation in individual pell grants is approximately the same for both states: and . for which state is the sample mean for our 100 pell grant recipients most likely to be within $80 of $2,600? group of answer choices state a because the sample represents a larger segment of this small population. state b because there is less variability in larger populations so estimates from samples are more accurate. equally likely because for both states.
Answer: The answer is state B because there is less variability in larger populations so estimates from samples are more accurate. The standard error of the mean is proportional to the standard deviation of the population and inversely proportional to the square root of the sample size. Since state B has a much larger population, it is more likely that our sample mean will be within $80 of $2,600 for state B than for state A.
Step-by-step explanation:
what is equivelent to −2y−8+4y khan academy
The equivalent expression is 2(y-4).
What is an expression?
A statement with more than two variables or integers can be written as an expression using addition, subtraction, multiplication, and division operations.
What is equivalent?Even though they have different looks, expressions that are equivalent do the same action. Two algebraic expressions that are equivalent have the same value when the variable is entered with the same value.
We have,
-2y - 8 + 4y
-2y and 4y are like terms.
So,
Add the like terms.
2y - 8
Taking out 2 commons.
2(y - 4)
Now,
We can not further simplify the expression.
Thus,
The equivalent expression is 2(y - 4).
Learn more about expressions here:
https://brainly.com/question/14083225
#SPJ1
A group of medical professionals predicts that the number of yearly occurrences of a disease will decrease from the year 2008 to the year 2016. They constructed a spreadsheet with formulas to display their predictions. How many occurrences of the disease do they predict in the year 2016?
One way to predict occurrences of a disease for a future year based on previous years' data is to use exponential modeling.
How can we predict occurrences of disease for year mathematically based on previous years data?Specifically, the formula for exponential growth or decay can be used to project the number of cases for a future time period based on the growth or decline rate observed in the past.
For example, let's say that we have data on the number of cases of a certain disease for the past 10 years. We can use this data to fit an exponential model that describes the growth or decline rate of the disease over time.
Once we have this model, we can use it to predict the number of cases for a future year. For instance, if the model predicts that the disease will grow at a rate of 5% per year, we can use this rate to estimate the number of cases for the next year by multiplying the current number of cases by 1.05. By doing this, we can forecast the occurrence of the disease for the next year based on the previous years' data.
Read more about exponential model
brainly.com/question/2456547
#SPJ1
Write 7.725666118 as a percentage
please show the method too.
Answer: 773%
Step-by-step explanation: 7.725666118 x 100 = 772.5666118
772.5666118 = 773 (rounded).
So, 7.725666118 as a percentage is 773%
For example, 50% is written in decimal form as 0.5
And, 0.5 x 100 = 50.
Multiplying by 100 is the same thing as moving the decimal two places to the right.
Laura had 10 shirts she then bought 3 shirts each week for 4 weeks
If Laura had 10 shirts to begin with and then bought 3 shirts each week for 4 weeks, she would have:
10 + (3 x 4) = 22 shirts
After 4 weeks, she would have a total of 22 shirts.
A teacher has a prize box that has 6 fidgets,2 rubix cubes,and 2 pop its-as well as a bag of candy that has 4 lollipops and 3 fieces of chocolate. Esther wins the weekly prize in class and can pick one toy from the prize box and one candy from the candy bag. What is the probability she will pick a fidget and a piece of chocolate?
The probability of Esther picking a fidget and a piece of chocolate is 3/14.
How to obtain the probabilityTo obtain the probability, we first need to list the items and then determine the chances of them being picked. Fisrt, there are a total of 12 items in the prize box and 7 items in the candy bag.
The probability of Esther picking a fidget from the prize box is 6/12 or 1/2, and the probability of her picking a piece of chocolate from the candy bag is 3/7. Since these events are independent, we can multiply their probabilities to find the probability of both events occurring:
P(fidget and chocolate) = P(fidget) x P(chocolate)
P(fidget and chocolate) = (1/2) x (3/7)
P(fidget and chocolate) = 3/14
Therefore, the probability of Esther picking a fidget and a piece of chocolate is 3/14.
Learn more about probability here:
https://brainly.com/question/24756209
#SPJ1
Writing What is the volume of the sphere? Use 3.14 for . Use pencil and paper. Describe how the volume of the sphere changes if the radius is increased by 1. radius is 19 in
Comparing the two volumes, we can see that the volume of the sphere decreased when the radius was increased by 1 inch. This is because the volume of a sphere increases with the cube of its radius, so small changes in the radius can result in significant changes in the volume.
What is volume?
A volume is simply defined as the amount of space occupied by any three-dimensional solid. These solids can be a cube, a cuboid, a cone, a cylinder, or a sphere. Different shapes have different volumes.
To find the volume of a sphere, we use the formula:
V = (4/3)πr³
where "r" is the radius of the sphere and "π" is approximately 3.14.
If the radius of the sphere is 19 inches, we can substitute this value into the formula to find its volume:
V = (4/3)π(19)³
V = (4/3)π(6859)
V = 36,236.71 cubic inches (rounded to two decimal places)
Therefore, the volume of the sphere with a radius of 19 inches is approximately 36,236.71 cubic inches.
If the radius is increased by 1 inch to 20 inches, we can find the new volume of the sphere using the same formula:
V = (4/3)π(20)³
V = (4/3)π(8000)
V = 33,510.32 cubic inches (rounded to two decimal places)
Hence, Comparing the two volumes, we can see that the volume of the sphere decreased when the radius was increased by 1 inch. This is because the volume of a sphere increases with the cube of its radius, so small changes in the radius can result in significant changes in the volume.
To know more about volume visit:
https://brainly.com/question/463363
#SPJ1
Please help to hard and I’ll give u 20 points
Answer: 2:4
Step-by-step explanation:
Simon wants to fill 8 punch bowls for a birthday party. Each punch bowl holds 9 1/5 quarts of punch. How much punch will Simon need?
Write your answer as a fraction or as a whole or mixed number.
Punch that Simon needs in fraction is 73[tex]\frac{3}{5}[/tex] quarts.
What is fraction?
Part of a whole is a fraction. The quantity is written as a quotient in mathematics, where the numerator and denominator are divided. Each is an integer in a simple fraction. Whether it is in the numerator or denominator, a complex fraction contains a fraction. The numerator and denominator of a correct fraction are opposite each other.
Here number of bowls punch for party = 8
Each punch bowl holds 9 1/5 quarts of punch .
Then converting into improper fraction then [tex]9\frac{1}{5}=\frac{45+1}{5}=\frac{46}{5}[/tex]
Now total punch Simon needs to fill 8 bowls is,
=> [tex]8\times\frac{46}{5}=\frac{368}{5}[/tex] = 73[tex]\frac{3}{5}[/tex].
Hence Punch that Simon needs in fraction is 73[tex]\frac{3}{5}[/tex] quarts.
To learn more about fraction refer the below link
https://brainly.com/question/78672
#SPJ1
Three stages at a music festival are arranged in a triangle. The distances between the centers of each stage are given:
Stage A and Stage B: 100 yards
Stage B and Stage C: 135 yards
Stage C and Stage A: 210 yards
List the interior angle measures formed at the center of each stage from greatest to least.
The interior angle measures formed at the center of each stage at a music festival from greatest to least are as follow,
Stage A = 126.01° > Stage B =31.33° > Stage C = 22.66°
Shape of the arrangement of three stages at a music festival is triangle.
Distance between the centers of each stage are as follow,
Stage A and Stage B = 100 yards
Stage B and Stage C = 135 yards
Stage C and Stage A = 210 yards
For Interior angles,
Use the Law of Cosines, which states that for a triangle with sides a, b, and c and opposite angles A, B, and C,
c² = a² + b² - 2abcos(C)
Label the sides of the triangle formed by the three stages,
Side AB = 100 yards
Side BC = 135 yards
Side CA = 210 yards
Then, find the interior angles at each stage as follows,
At Stage A,
a = 210 yards (CA)
b = 100 yards (AB)
c = 135 yards (BC)
cos(A) = (b² + c² - a²) / (2bc)
⇒cos(A) = (100² + 135² - 210²) / (2 × 100 ×135)
⇒cos(A) = -0.5880
⇒A = arccos(-0.5880)
A = 126.01 degrees
At Stage B,
a = 100 yards (AB)
b = 135 yards (BC)
c = 210 yards (CA)
cos(B) = (a² + c² - b²) / (2ac)
⇒cos(B) = (100² + 210² - 135²) / (2 × 100 ×210)
⇒cos(B) = 0.8542
⇒B = arccos(0.8542)
⇒B = 31.33 degrees
At Stage C,
a = 135 yards (BC)
b = 210 yards (CA)
c = 100 yards (AB)
cos(C) = (a²+ b² - c²) / (2ab)
⇒cos(C) = (135² + 210² - 100²) / (2 × 135 × 210)
⇒cos(C) = 0.9228
⇒C = arccos(0.9228)
⇒ C = 22.66 degrees
Therefore, the interior angle measures formed at the center of each stage from greatest to least are,
Stage A = 126.01 degrees
Stage B =31.33 degrees
Stage C = 22.66 degrees
Learn more about angles here
brainly.com/question/13954458
#SPJ1
● • 4√13 ft
.
143 ft
• 14.33 ft
Which list shows these diagonal lengths in order from greatest to least?
F 14.33, 14,4√13
G 14.33, 4√13, 14
H 14, 14.33, 4√/13
J 4√13, 14, 14.33
The correct order from greatest to least is option G. 14.33, 4√13, 14
How did we get the value?To convert a root number to a whole number, you simply need to evaluate the root expression by performing the indicated operation. The result of the evaluation will be a whole number.
Here are the steps to convert a root number to a whole number:
Determine the type of root: square root (√), cube root (∛), etc.
Write the root expression using the appropriate symbol and the radicand (the number inside the root symbol).
Evaluate the expression by performing the indicated operation. For example, if it is a square root, multiply the number inside the root symbol by itself. If it is a cube root, multiply the number inside the root symbol by itself three times.
The result of the evaluation will be a whole number.
To compare the diagonal lengths, we need to convert them to the same units. We can convert 4√13 ft to approximately 9.17 ft by using a calculator. Now we have:
14.33 ft
0.143 ft
9.17 ft
So, the order from greatest to least is:
G. 14.33, 4√13, 14
learn more about root expression: https://brainly.com/question/738531
#SPJ1
A salesman's commission varies directly as his sales.If the commission is $10 for $100 in sales, find the commission for $150 in sales.
a. $12 b. $20 c. $15 d. $25
The commission for $150 in sales is $15. This corresponds to option (c) in the given answer choices.
We are told that the salesman's commission varies directly with his sales. This means that if the sales increase by a certain percentage, then the commission will also increase by the same percentage. We can set up a proportion to solve for the commission:
Commission/Sales = Commission Rate
We are given that the commission rate is $10 for every $100 in sales. We can use this information to set up a proportion:
Commission/150 = 10/100
To solve for the commission, we can cross-multiply and simplify:
Commission = (150 x 10)/100 = $15
In general, if we let x represent the sales amount, and c represent the commission, then we can use the formula:
c = (x/100) * 10
where 10 represents the commission rate of $10 per $100 in sales. We can use this formula to calculate the commission for any given sales amount.
Therefore, Correct option is C.
To learn more about commission click on,
https://brainly.com/question/929522
#SPJ4
Which line best describes the narrative structure of "Cautionary Tale of Girls and Birds of Prey"?
1) alliteration and assonance that create a peaceful, dreamlike rhythm
2)exaggeration and hyperbole used to describe a girl’s irrational fear of a bird of prey
3)images that make the reader question whether the girl only imagined the hawk
4)two-line stanzas that slowly build suspense about the girl’s fear of the hawk
The answer is Option 4) two-line stanzas that slowly build suspense about the girl’s fear of the hawk.
What is a metaphor?In literature, metaphors are frequently used to evoke strong feelings and express nuanced concepts. Because they establish a clear connection between two objects, they can be more effective than similes, but they can also be trickier to understand because they depend on the reader's comprehension of the suggested meaning. On the other hand, similes are frequently used in everyday language and might have a clearer meaning.
The poem is divided into two-line stanzas, with each stanza offering a specific concept or illustration that helps to heighten the tension around the girl's hawk phobia. Up until the final stanza, where the story's climax is disclosed, each of the stanzas builds on the one before it, intensifying the situation and the girl's anxiety. The short, pointed lines that emphasise the bird's unexpected arrival and motions, as well as the poem's structure, all contribute to its tense, unsettling atmosphere.
Learn more about metaphors here:
https://brainly.com/question/13020675
#SPJ1
Marley owns a music store. The first week a new album was released, he sold 800 copies at his store. Each week after the release, the number of copies sold decreased by 11%
Select all the functions that can be used to find the number of copies sold, f(n), n weeks after the release.
The correct options that shows the the functions that can be used to get the number of copies are:
f(1) = 800 , f(n) = 0.89 * f(n-1) n ≥ 2Option 2 is also correctHow to find the number of copiesfirst week sold 800 copies
∴ at n=1 ⇒⇒⇒ f(1) = 800
Each week the number of copies sold decreased by 11%.
∴ at n = 2 ⇒ f(2) = 800 * (1-.11) = 800 * 0.89 = f(1) * 0.89
at n = 3 ⇒ f(3) = 800 * 0.89 *0.89 = 800 * 0.89² = f(1) * 0.89 * f(2)
at n = 4 ⇒⇒⇒ f(4) = 800 * 0.89³ = f(1) * 0.89 * f(3)
Read more on functions here:https://brainly.com/question/11624077
#SPJ1
Find the volume of a cone that has a height of 9 inches and a diameter of 12 inches. Use 3. 14 for pi and round to the nearest tenth
The volume of the cone with height of 9 inches and a diameter of 12 inches is approximately 339.3 cubic inches.
To find the volume of a cone, we need to use the formula V = (1/3)πr^2h, where r is the radius of the base of the cone and h is the height of the cone.
Since the diameter of the cone is given as 12 inches, we can find the radius as half of the diameter, which is 6 inches. The height of the cone is given as 9 inches.
Now, we can substitute the values of r and h in the formula to get the volume as follows
V = (1/3)πr^2h
= (1/3)×3.14×6^2×9
= 339.12 cubic inches (rounded to the nearest tenth)
Therefore, the volume of the given cone is approximately 339.1 cubic inches.
To know more about volume of a cone:
https://brainly.com/question/1984638
#SPJ4
While Brian traveled, the pilot taught him
O how to steer a Cessna 406
O how to fill the gas tank on the Cessna 406
O how to read the instrument panel on the Cessna 406
While Brian traveled, the pilot taught him A. how to steer a Cessna 406.
What is a Cessna 406?The Cessna 406 is a twin-engine aircraft that is commonly used for various purposes, such as air ambulance services, freight transport, and surveillance operations. Steering the aircraft is an essential skill that any pilot must learn in order to control the aircraft's direction of flight.
Learning how to steer a Cessna 406 would be an important skill for Brian to acquire if he was planning to become a pilot or work in the aviation industry.
Find out more on pilots at https://brainly.com/question/24873179
#SPJ1
One of the legs of a right triangle measures 16 cm and the other leg measures 2 cm. Find the measure of the hypotenuse. If necessary, round to the nearest tenth.
Answer: 16.1 cm
Step-by-step explanation:
Attached below is a diagram of the triangle.
If you have two legs, you can find the hypotenuse of the right triangle by using the Pythagorean Theorem.
Pythagorean Theorem: a² + b² = c²
Let's set
a = 16 cm
b = 2 cm
So we get,
16² + 2² = c²
256 + 4 = c²
260 = c²
Take the square root of both sides to get c. Since you are taking the square root, there are two answers, positive and negative, but a side length can not be negative.
[tex]\sqrt{260}[/tex] = c
Input this into your calculator, and you get
c = 16.1245155 cm
Rounding to the nearest tenth you get c = 16.1 cm
pls help with both problems due tmrw
Based on the description of the problem,the measure of ∠BTX is 60°.
What is circle?A circle is a two-dimensional geometric shape made up of all the points that are equally spaced apart from the circle's centre.
The radius of the circle is the distance measured from any point on the circle to its centre.
The circumference is the collection of all the points on the circle.
Based on the description of the problem, we can conclude that triangle BOX is an isosceles triangle with OB = OX. This is because both OB and OX are radii of the same circle centered at O.
Since m/BOX = 120°, we can find the measure of angle B by dividing this angle in half, since angle B is the base angle of the isosceles triangle BOX.
∠BO = (180° - 120°)/2 = 30°
Now, since TX and TB are tangent to the circle at points X and B respectively, we know that angle BTX is equal to the sum of angles BOY and OXT, since angle BOY and OXT are both in the same quadrant and add up to 90°.
∠BTX = ∠BOY + ∠OXT>
Since triangle BOX is an isosceles triangle with angle BOY equal to 30°, we can find the measure of angle OXT as follows:
∠OXT = 180° - ∠BOX - ∠BOY
= 180° - 120° - 30°
= 30°
Therefore,
∠BTX = ∠BOY + ∠OXT
= 30° + 30°
= 60°
To know more about angle visit:
https://brainly.com/question/31197652
#SPJ1
At Bruno’s Video World, the regular price for a DVD is d dollars. How many DVDs can be purchased for x dollars when the DVDs are on sale at 20% off the regular price?
The number of DVDs can be purchased for x dollars = 5x/4d.
The correct answer is an option (e)
Here you have x dollars to spend.
The regular price for a DVD is d dollars.
We need to find the number of DVDs can be purchased for x dollars when the DVDs are on sale at 20% off the regular price.
To find number of DVDs can be purchased for x dollars, we must divide x by the sale price of a CD.
After 20% off, the sale price would be,
(100 - 20)% of d
= 80% of d
Using percentage formula, we can write 80 percent of d as,
80%d
= (80/100) × d
= (4/5)d .
So, we need to divide x by (4/5d) which is equal to 5x/4d.
Therefore, the correct answer is an option (e)
Learn more about the percentage here:
https://brainly.com/question/16797504
#SPJ4
The complete question is:
At Bruno’s Video World, the regular price for a DVD is d dollars. How many DVDs can be purchased for x dollars when the DVDs are on sale at 20% off the regular price?
a) 4/5x
b) 5/4x
c) 4/5d
d) 4x/5d
e) 5x/4d
on average, what percentage of infants born to 45-year-old mothers have down syndrome? on average, what percentage of infants born to 45-year-old mothers have down syndrome? 1% 3% 8% 10% 30%
The number of infants born to 45-year-old mothers who have Down syndrome on average is approximately 1 in 30 or 3.33%. The Down disorder may be a hereditary clutter that happens when there's an additional duplicate of chromosome 21.
The chance of having a child with Down disorder increments with maternal age. Agreeing to the American College of Obstetricians and Gynecologists, at age 35, the hazard of having an infant with Down disorder is around 1 in 350, or 0.29%. By age 40, the hazard increments to around 1 in 100, or 1%. And by age 45, the chance is around 1 in 30 or 3.33%.
In any case, pre-birth testing can offer assistance distinguish the chance of Down disorder and other hereditary anomalies amid pregnancy. This will offer assistance to hopeful guardians to make educated choices approximately their pregnancy and their baby's wellbeing.
To learn about Down syndrome visit:
https://brainly.com/question/31090859
#SPJ4
please answer only if you know the answer.
The dimensions of the net for the cube lampshade which fits into the sheet of plastic with dimensions 20 cm by 15 cm indicates;
5. The area of each square of (5 cm)² on the sheet of plastic, indicates that the area of the net comprising of six squares is 150 cm²
6. The percentage of the plastic sheet wasted is 50%
What is a cubic shape?
A cubic shape is a shape that consists of six square faces, twelve edges and eight vertices. The area of each square face of side length s = Side length, s × Side length, s.
5. The surface area of the net in the figure can be calculated by finding the sum of the area of the squares within the area of the net.
The number of squares in the figure are 6 squares
The area of each square = (5 cm)²
The area of the sheet of plastic = 20 cm × 15 cm = 300 cm²
The area of the net containing six squares is therefore;
Area = 6 × (5 cm)² = 150 cm²
The surface area of the net is 150 cm²6. The amount of plastic sheet wasted can be obtained by finding the difference between the area of the plastic and the area of the net
Area of the sheet of plastic = 20 cm × 15 cm = 300 cm²
Area of the net = 150 cm²
Amount of the plastic sheet wasted = 300 cm² - 150 cm² = 150 cm²Therefore, the percentage of the plastic sheet wasted is (150/300) × 100 = 50%Learn more on the area of a net here: https://brainly.com/question/26581443
SPJ1
In 2007, Jessica earned p dollars, where p > 100,000. She was paid monthly. Express the
amount her employer contributed to her Social Security tax in February algebraically.
The algebraic expression representing her employee's contribution to Social Security Tax is given as follows:
p > 516.67.
How to obtain the algebraic expression?The algebraic expression representing her employee's contribution to Social Security Tax is obtained applying the proportions in the context of the problem.
An year is composed by 12 months, hence the monthly salary is represented as follows:
p > 100000/12
p > 8,333.33.
The Social Security tax is of 6.20%, hence the expression is given as follows:
p > 8,333.33 x 0.062
p > 516.67.
More can be learned about proportions at https://brainly.com/question/24372153
#SPJ1
Please help me solve my add math question
A result of 2 = 7 - = 7 - (-5) = 12 and = -5 is as follows as after combining similar terms , (2-μ)a + (u+1).
what is vectors ?A vector seems to be an object in mathematics that also has scale (or length) and motion. Arrows can be used to graphically depict vectors, with the arrow's trajectory denoting the vector's magnitude and its length denoting its direction. In order to construct a new vector with the a different magnitude but the same direction, vectors can be multiplied by a scalar (a real number) or joined together to make a resultant vector (or the opposite direction if the scalar is negative).
given
First, we can make the given equation simpler:
(2-μ)a + (u+1)
b = 7a - (2+2)b
2a - a + ub + + + b = 7a - 2b - 2b
combining similar terms
(2-μ)a + (u+1)
b = 7a - 4b
We currently have two equations:
2 - μ = 7 (1)
u + 1 = -4 (2) (2)
Equation (2) provides us with:
u = -5
Equation (1) is amended as follows:
2 - μ = 7
μ = -5
A result of 2 = 7 - = 7 - (-5) = 12 and = -5 is as follows as after combining similar terms , (2-μ)a + (u+1).
To know more about vector visit:
https://brainly.com/question/30202103
#SPJ1
The complete question is:-
The vectors a and b are not parallel and (2-μ)a + (u + 1)b = 7a-(2+2)b where λ and μ are scalars. Find the values of 2 and μ.
Assume that
log 4 ~ 0.6021, log 5 ~ 0.6990, and log 6 – 0.7782
Use the properties of logarithms to evaluate
the expression. Do not use your calculator.
(Round your answer to 4 decimal places. If your
answer includes a negative, enter it like: -2)
log 16 = [a]
Answer:
Step-by-step explanation:
?
Show Sample Answer
Part B
In general, how do the measures of the angles in the image compare with the measures of the angles in the preimage?
What affect does the scale factor of the dilation have on the angles, if any?
After a dilation, the angle measures remain constant, meaning that they are not affected by the scale factor of the dilation.
What is a dilation?A dilation can be defined as a transformation that multiplies the distance between every point in an object and a fixed point, called the center of dilation, by a constant factor called the scale factor.
The side lengths are changed, but the original figure and the dilated figure are similar, meaning that the angle measures remain constant, no matter the scale factor.
More can be learned about dilation at brainly.com/question/3457976
#SPJ1
Solve the equation. Round to the nearest tenth if necessary. x^2=36
Answer:
x = 6
Step-by-step explanation:
Solve for x:
[tex]x^2=36[/tex]
Take the square root of 36
[tex]x=6[/tex]