Answer: 58 degrees
Step-by-step explanation:
Can somebody help me please
Answer:
[tex]\frac{6}{22}[/tex]
Step-by-step explanation:
[tex]\frac{6}{11}[/tex] × [tex]\frac{1}{2}[/tex] = [tex]\frac{6*1}{11*2}[/tex] = [tex]\frac{6}{22}[/tex]
According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.40 cm. A two year old girl with Down's syndrome has a head circumference of 44.5 cm. Children with Down's syndrome typically have smaller heads, so this is not surprising. 1. Relative to the WHO data, what is this girls z-score? What does the z score tell us? 2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?
Answer:
1. z = -1.91429
The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference
2. 2.7792%
Step-by-step explanation:
1. Relative to the WHO data, what is this girls z-score?
z score formula is:
z = (x-μ)/σ, where
x is the raw score = 44.5 cm
μ is the population mean = 47.18cm
σ is the population standard deviation = 1.40cm
z = 44.5 - 47.18/1.40
z = -1.91429
What does the z score tell us?
The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference
2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?
z score = -1.91429
Probability value from Z-Table:
P(z =-1.91429) = P(x<44.5) = 0.027792
Converting to percentage = 0.027792 × 100
= 2.7792%
based on the graph, what are the rate of change and the y intercept of the line.
O the rate of change is 1/2 and the y-intercept is 1
O the rate of change is one and the y-intercept is 1/2
O the rate of change is 1/2 and the y intercept is -2
O the rate of change is 2 and the y intercept is 1
Answer:
The rate of change is 1/2 and the y-intercept is 1
Step-by-step explanation:
You can calulate the rate of change by picking two points on the graph and using the slope formula
(y2-y1)/(x2-x1)
so in this example you can use the points (2,2) represeting (x1,y1) and (4,3) representing (x2,y2)
When you plug into the slope formula you get:
(3-2)/(4-2) = 1/2 which is the slope.
The y-intercept is where the line intersects the y=axis and can be seen as the coordinate pair (0, #) where the # is the y intercept. From the graph you can see the y-intercept is 1, but you can aslo solve for the y-intercept using the slope-intercept equation:
y=mx+b
where b is the y-intercept and m is the slope.
so using a slope of 1/2 and a coordinate of (2,2) you get:
y-2=(1/2)(x-2)
y = (1/2x)-1+2
y = (1/2x) + 1
so now the equation is in slope-intecept form and you can see the slope is 1/2 and the y-intercept is 1
Express your answer in simplified form.
Help would be appreciated!
a bakery sells 3642 pastries in 2010. The bakery sells 8422 pastries in 2015. write a linear model that represents the number y of pastries that thw bakery sells x after 2010.
Answer:
Step-by-step explanation:
x is number of years after 2010
y is number of donuts
we are given
A bakery sells 7196 donuts in 2010
So, when x=0 , y=7196
Let's assume
The bakery sells 9236 donuts in 2015
now, we can find slope
we can plug values
now, we can use point slope form of line
we can plug values
Toya is training for a triathlon and wants to
bike and run on the same day. She has less
than 3 hours to spend on her workouts. What
inequality represents the time Toya has to
bike and run? What is the graph of the
solution set?
Answer:
123
Step-by-step explanation:
ponuts
A ride-sharing company claims that the cost of rides follows a Normal distribution with a mean of $10.52. After
paying for a ride from this company, a rider reports that his price is in the 85th percentile of all other riders' prices. If
this rider paid $15.93, what is the approximate standard deviation of this company's ride-sharing cost?
Answer:
$5.20
Step-by-step explanation:
According to the Z-Score chart, the 85th percentile has a z-score of 1.04 and if you put that in the z-score equation (15.93-10.52)/x=1.04. Solve for x and you get $5.20.
The perimeter of a rectangle is 208 inches. The ratio
of its length to its width is 5:3. What are the
dimensions of this rectangle?
A. 60 in by 44 in
B. 65 in by 39 in
C. 68 in by 36 in
D. 72 in by 32 in
Answer:
65 in and 39 in respectively
Step-by-step explanation:
Let r be the common ratio; when we multiply both L and R by this common ratio, we'll get the actual length and actual width of the rectangle, Recalling that the formula for the perimeter of a rectangle is P = 2L + 2R, we get:
2(5r) + 2(3r) = 16r = 208 in
Then r = 208/16 = 13
Thus, the actual length is 5(13 in) and the actual width is 3(13 in.),
or 65 in and 39 in respectively.
As a check, calculate 65 in / 39 in; this comes out to 5:3, as required.
Then
In order to train for cross-state biking trip, Julie rides her bike 34.65 miles five times a week. How many total miles does she ride each week?
Answer:
173.25 miles
Step-by-step explanation:
do 34.65 x 5 to get the answer.
hope this helps!
Consider the equation 4x -5(2x +1) = ax + b If a= (-6) and b=0 how many solutions does this eqaution have
it has one solution. x=2/7. im pretty sure
Need help asappppppp
Answer:
press control u on ur google forms quiz than scroll all the way down to the questions and the answer should be right next to them.
Each day a machine makes 500000 staples and puts them into boxes.
The machine needs 165 staples to fill a box.
How many boxes will be filled with the 500,000 staples?
Answer:3031 boxes will be filled with staples
Step-by-step explanation:
Given that the machine makes 500000 in a day
So total staples = 500000
Staples in a box = 165
In order to find how many boxes the machine will make, the total number of staples has to be divided by the number of staples in a box.
So,
[tex]number\ of\ boxes = \frac{Total\ staples}{Staples\ in\ a\ box}\\= \frac{500000}{165}\\= 3030.30[/tex]
As no staples can be left out of box, we will round off the number to next number.
So,
3031 boxes will be filled with staples
Answer:
3031 boxes
Step-by-step explanation:
On a number line, 0.7 would be located. Choose all answers that make a true statement
A. to the right of 0.54
B. to the left of 0.8
C. between 1.6 and 1.8
D. to the right of 0.9
please help me
Answer:
A and B are correct
which relation is a function?
Answer:
A.) (The absolute value function)
Step-by-step explanation:
When evaluating pre-graphed relations, we can determine their functionality by performing the vertical line test!
Graph A (the one which looks like a v) passes the vertical line test while all others do not!
I hope I was of assistance! #SpreadTheLove! <3
3.5 h+4.5)= 57 whats the value for h
Answer:
♡ hi there, fairy ♡
- h is 15 because 57-4.5=52.5/3.5=15
have a great day.
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Step-by-step explanation:
Answer:
The answer is h=15
Step-by-step explanation:
3.5 h+4.5)= 57
Let's solve your equation step-by-step.
3.5h+4.5=57
Step 1: Subtract 4.5 from both sides.
3.5h+4.5−4.5=57−4.5
3.5h=52.5
Step 2: Divide both sides by 3.5.
3.5h/3.5=52.5/3.5
h=15
Answer: h=15
(Quick I'm being timed)
Find the value of the variable using these steps.
0.4x + 3.9 = 5.78
1. Subtraction property of equality
2. Division property of equality
X = ____
Answer:
x = 4.7
Step-by-step explanation:
You will need to subtract 3.9 from 5.78, then divide by 0.4. The answer is 4.7 because you are left with x = 4.7.
Hope this helps you!
The fabric for a dress costs $180 for 9 yards.
What is the cost per yard?
Answer:
$20
Step-by-step explanation:
because it wants the cost per yard so you need to do the amount ($180) and divide by the yards (9) so you do 180 ÷ 9 = 20
So there for, you get $20
If this helpped and my explanation was good then please mark brainliest hope you have a good day!
8. What is x
9. What is the measure of angle ABD
10. What is the measure of angle DBC
(PS the numbers by the = sign are not the answers and could someone please help)
Answer:
x=10
ABD= 101
DBC= 79
Step-by-step explanation:
hope that this helped and I ise go formative too btw
if 33 laptops cost 30,000, what proportion could be used to determine the cost of 11 laptops?
Answer:
30,00 divided by 33= 909.09 times 11=9,999.99 hope it helps you
Step-by-step explanation:
Before 2017, smartphones by major manufacturers all had screens with a aspect ratio. In 2017, two major brands released phones with screens in an aspect ratio. However they still reported their screen size using the same diagonal length of the earlier phones, 5.8 inches. How did the change in aspect ratio affect the screen size, if at all?
Answer:
the question is missing the numbers, so I looked for a similar one and found that screens back in 2017 had a 16:9 ratio and since then it changed to 18.5:9 ratio
the area of the screen is b x a x 0.5
we can form triangles:
old aspect ratio (16:9):
a = 1.778b
h = √(a² + b²)
5.8 = √[(1.778b)² + b²]
5.8 = √(3.16b² + b²)
5.8² = 4.16b²
33.64 = 4.16b²
b² = 33.64 / 4.16 = 8.0865
b = √8.0865 = 2.8437
a = 2.8437 x 1.778 = 5.056
area = 2.8437 x 5.056 x 0.5 = 7.19 in²
new aspect ratio (18.5:9):
a = 2.0556b
h = √(a² + b²)
5.8 = √[(2.0556b)² + b²]
5.8 = √(4.2253b² + b²)
5.8² = 5.2253b²
33.64 = 5.2253b²
b² = 33.64 / 5.2253 = 6.4379
b = √6.4379 = 2.5373
a = 2.5373 x 2.0556 = 5.2157
area = 2.5373 x 5.2157 x 0.5 = 6.62 in²
the actual screen area decreased by 0.57 in² or 7.93%
Sarah is trying to run a certain number of miles by the end of the month. If Sarah is 80% of the way to achieving her goal and she has already run 40 miles, how many miles is she trying to run by the end of the month?
Answer: 50 miles
Step-by-step explanation:
Let the miles that she is trying to run by the end of the month be denoted by x.
Since she is 80% of the way to achieving her goal and she has already run 40 miles. This can be expressed as:
80% of x = 40
80/100 × x = 40
0.8x = 40
x = 40/0.8
x = 50
The miles that she is trying to run by the end of the month is 50 miles.
You and four friends are going to Magic Mountain. It cost $20 to park your car and you spend $445 total just to get into the park. Solve to find the price per ticket. Please remember this is money.
Answer:
$85
Step-by-step explanation:
445-20=425 425 ÷5= 85
determine the true statements about trend lines in scatterplot. Check all that apply
Answer:
what
Step-by-step explanation:
theres no answers?
Answer:
(A) A trend line can be used to make predictions in real-world situations.
(B) A scatterplot that shows no correlation between the variables does not have a trend line.
(D) A regression line and trend line are equivalent terms.
Step-by-step explanation:
Pls help me im really dumb right now but pls help me .p.s.its on career they didnt have a mode for career and pls dont do it for the points.
Answer:
A. National Labor Relations Act
Step-by-step explanation:
Choose the best answer. What is the value of the expression x + (-y) when x = 1.2
and y = -10.72
-9.5
11.9
-11.9
9,5
Answer:
[tex]-9.5[/tex] is the best answer.
Step-by-step explanation:
Given the expression
[tex]x + (-y)[/tex]
putting x=1.2 and y=-10.72 in the expression
[tex]x\:+\:\left(-y\right)=1.2\:+\:\left(-10.72\right)[/tex]
[tex]=-9.52[/tex]
Therefore, -9.5 is the best answer.
John took a 5 1/2 mile walk to his friend's house. He left at 11 a.M. And arrived at his friend's house at 12:45 p.m What was his average speed of walking in miles per hour?
Solve the equation for the given variable.
9(5x+3)+2x−8=47x+28
pls hurry I need help ill give you brainlest
Answer:
No solution
Step-by-step explanation:
45x + 27 + 2x - 8 = 47x + 28
47x + 19 = 47x + 28
19 = 28
19 can never equal 28
How much felt is used to make the flag?
Answer:
i can't see it
Step-by-step explanation:
it's blury.
Chuck-E-Cheese is open for 11 ½ hours during a day. The arcade keeps one employee in charge of games at a time. Each shift is 3 ¾ hours long. How many complete shifts are there each day?
Answer:
3 complete shifts
Step-by-step explanation:
Simple division!
11.5 / 3.75 =
3.066 --> 3
Consider Brainliest! Hope I helped!
HOW DO I TRANSFORM THAT S INTO A ZERO!!!! PLS HELP!!!
You can add subtract divide or multiply.
Answer:
try dividing it's best for the problem your doing and ik im not the best at math but i do a lot of problem like this during school and first find what number -n is and it won't be a positive number remember that, tbh i really hope this helped im not sure if it did im so sorry if it didn't.
Step-by-step explanation: