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4 years ago

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

Mathematics

2 answers:

ICE Princess25 [194]4 years ago

6 0

30?
30pi = 2pi r
30pi / 2pi = 15
15 = r
double the radius to get the diameter
15)2 =30

Mashutka [201]4 years ago

4 0

Answer:

Step-by-step explanation:

The circumference formula for a circle is

$C=2\pi r$ or $C=\pi d$

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.

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3 years ago

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Sveta_85 [38]

Answer:

z= 5/14

Step-by-step explanation:

Let's solve your equation step-by-step.

5−2(3z+2)=−4(1−2z)

Step 1: Simplify both sides of the equation.

5−2(3z+2)=−4(1−2z)

5+(−2)(3z)+(−2)(2)=(−4)(1)+(−4)(−2z)(Distribute)

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Step 2: Subtract 8z from both sides.

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Step 3: Subtract 1 from both sides.

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3 0

3 years ago

If Brian biked at an average speed of 12.2 miles per hour for 1.45 hours, you can find the total distance by multiplying

spin [16.1K]

Answer:

17.69 miles

Step-by-step explanation:

We are given that Brian is riding his bike with a speed of 12.2 miles per hour . We have to evaluate the distance traveled if he rides his bike for 1.45 hours.

We know that the formula for distance is given as

Distance = speed * time

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Hence Brian travels 17.69 miles.

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Yuliya22 [10]

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Step-by-step explanation:

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