What’s the diameter of the circle of the circumference is 30 pi inches

Step-by-step explanation:

The circumference formula for a circle is

or

We'll use the second one since our problem wants us to find diameter.  If we know that the circumference is 30π, then we will sub in 30π for C and solve for d:

30π = πd so

30π/π = d

The π's cancel out, leaving us with a diameter of 30 inches.

a

step-by-step explanation:

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2