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3 years ago

Can someone please help me.There is not just one answer there can be multiple

Mathematics

2 answers:

poizon [28]3 years ago

7 0

I believe that c, d and f are right

Roman55 [17]3 years ago

3 0

Hi 3DST3!

The diameter of a circle is x 2 the radius. The radius is, as you checked, 5m. Therefore the answer cannot be A.

The circumference formulas are $\pi$ * diameter or 2 $\pi$ (3.14 rounded)r. The radius of the circle is 5 and pi (rounded) = 3.14, therefore, 2*3.14*5. 2*3.14*5 = 31.4. Therefore b isn't a correct answer choice and neither is e.

The diameter, as I said, is 2 * r. Our r is 5. 2 * 5 = 10. 10 is our diameter and C the correct answer choice.

The area of a circle's formula is $\pi$ $r^{2}$ Therefore 3.14 * 5^2 -> 3.14 * 25 = 78.5. D is correct.

Answers that are correct:
C
D
F

Answers that are incorrect:
A
B
E

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Answer:

see the explanation

The solution's table in the attached figure

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

y ----> the price

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Find the value of the proportionality constant for each ordered pair in each table

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If all the values of k are equal, then the table represents a proportional relationship between the variable x and the variable y

Table 1

For x=1.5 lb, y=$4.50 ----> $k=\frac{4.5}{1.50}=3$

For x=2 lb, y=$9.00 ----> $k=\frac{9.00}{2}=4.5$

The values of k are different

therefore

The table not represent a proportional relationship

Table 2

For x=10 g, y=$0.50 ----> $k=\frac{0.50}{10}=0.05$

For x=15 g, y=$0.55 ----> $k=\frac{0.55}{15}=0.04$

The values of k are different

therefore

The table not represent a proportional relationship

Table 3

For x=0.5 Kg, y=$0.75 ----> $k=\frac{0.75}{0.5}=1.5$

For x=5 g, y=$7.50 ----> $k=\frac{7.50}{5}=1.5$

The values of k are equal

therefore

<u><em>The table represent a proportional relationship</em></u>

Table 4

For x=1 oz, y=$2.00 ----> $k=\frac{2}{1}=2$

For x=2 lb, y=$4.00

Convert lb to oz

Remember that

1 lb=16 oz

2 lb=2(16)=32 oz

For x=32 lb, y=$4.00 ----> $k=\frac{4}{32}=0.125$

The values of k are different

therefore

The table not represent a proportional relationship

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