If the radius of a circle is 7cm, then the diameter is 14cm. True or false?

True

Step-by-step explanation:

The diameter of a circle is a segment that crosses through the center of a circle and has its endpoints on the circle.

The radius is exactly half of the diameter.

The relationship between the two is: d = 2r, where d is diameter and r is radius.

Given that the radius is 7, we plug this into the formula: d = 2r = 2 * 7 = 14.

Thus, it's true that the diameter is 14 cm.

Hope this helps!

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

answer: its the third option.

step-by-step explanation:

i just took the test.