4⁄5 x + 15 = 3⁄10 x + 21

Solving the equation 4x + 7 = 9 will give value of x = 1/2

To solve we will use the equation

4x + 7 = 9

By subtracting 7 from both side we get

4x + 7 -7 = 9 -7

4x = 2

By diving 4 from both sides we get

4x/4 = 2/4

x = 1/2

To check we put the value of x in the equation we get

4(1/2) + 7 = 9

2 + 7  = 9

9 = 9

Hence the value of x is satisfying the equation

Therefore, the value of x is 1/2

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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

6. 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

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The correct order from greatest to least is option G. 14.33, 4√13, 14

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

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While Brian traveled, the pilot taught him A. how to steer 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.

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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.

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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]

The total 460 cards are sold on Mothers day.

Given that, Bob's gift shop sold a record number of cards for Mother's Day.

One salesman sold 46 cards, which was 10% of the cards sold for Mother's Day.

Let the number of cards sold on mothers day be x.

Here, 10% of x =46

10/100 ×x= 46

10x=4600

x=460

Therefore, total 460 cards are sold on Mothers day.

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The answer is Option 4) two-line stanzas that slowly build suspense about the girl’s fear of the hawk.

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.

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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.

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.

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The correct options that shows the the functions that can be used to get the number of copies are:

first 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)

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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. 

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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:

Based on the description of the problem,the measure of ∠BTX is 60°.

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°

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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.

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The algebraic expression representing her employee's contribution to Social Security Tax is given as follows:

p > 516.67.

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.

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Answer: This is a binomial distribution problem with parameters n = 17 and p = 0.3, where n is the sample size and p is the probability of a defective bulb. We need to find the probability that between 3 and 6 (both inclusive) bulbs from the sample are defective.

Let X be the number of defective bulbs in the sample. Then X has a binomial distribution with parameters n = 17 and p = 0.3, i.e., X ~ B(17, 0.3).

We want to find P(3 ≤ X ≤ 6). Using the binomial probability formula, we have:

P(3 ≤ X ≤ 6) = P(X = 3) + P(X = 4) + P(X = 5) + P(X = 6)

= (17 choose 3)(0.3^3)(0.7^14) + (17 choose 4)(0.3^4)(0.7^13) + (17 choose 5)(0.3^5)(0.7^12) + (17 choose 6)(0.3^6)(0.7^11)

≈ 0.1566 (rounded to four decimal places)

Therefore, the probability that between 3 and 6 (both inclusive) bulbs from the sample are defective is approximately 0.1566.

Step-by-step explanation:

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.

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Answer: $8000r

Step-by-step explanation:

Assuming that both savings accounts earn the same interest rate over the five-year period, Giovanna would have earned the same amount of interest on both accounts.

If she deposited half of the money, which is $1600/2 = $<<1600/2=800>>800, into each account, then the total amount of money she deposited into savings is $800 + $800 = $1600.

Let's say the interest rate on both accounts is r, expressed as a decimal. The amount of interest Giovanna earns on the Oak account after five years would be:

Interest on Oak account = $800 * r * 5

Similarly, the amount of interest she earns on the West United account after five years would be:

Interest on West United account = $800 * r * 5

The total amount of interest she earns from both accounts would be the sum of these two amounts:

Total interest = Interest on Oak account + Interest on West United account

= ($800 * r * 5) + ($800 * r * 5)

= $1600 * r * 5

= $8000r

So, the total amount of interest Giovanna will have earned from both accounts at the end of five years is $8000r. The actual value of r would depend on the interest rate offered by each savings account.

The equivalent expression is 2(y-4).

A statement with more than two variables or integers can be written as an expression using addition, subtraction, multiplication, and division operations.

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).

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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.

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.

The area of the given composite figure is 40 square inches.

What is a composite figure?

A composite figure and shape are the same thing. A composite figure is any object that may be disassembled into multiple fundamental shapes.

We are given a composite figure which can be broken into a triangle and a rectangle.

So,

⇒ Area of composite figure = Area of Rectangle + Area of triangle

⇒ Area of composite figure = (length * breadth) + ([tex]\frac{1}{2}[/tex] * base * height)

⇒ Area of composite figure = (5 * 7) + ([tex]\frac{1}{2}[/tex] * 5 * 2)

⇒ Area of composite figure = 35 + 5

⇒ Area of composite figure = 40 square inches

Hence, the area of the given composite figure is 40 square inches.

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Answer: 2:4

Step-by-step explanation:

The probability of Esther picking a fidget and a piece of chocolate is 3/14.

To 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.

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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.

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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

Answer:

The area of the shaded sector is

(π/4)(6^2) = (π/4)(36) = 9π

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.

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After a dilation, the angle measures remain constant, meaning that they are not affected by the scale factor of the 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.

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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.