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emmainna [20.7K]
3 years ago
15

Robert is building a deck in his backyard. Each piece of wood measures 42.5 inches. If he has 86 boards,how long are they altoge

ther
Mathematics
1 answer:
saul85 [17]3 years ago
8 0

The length is 3655 inches. Hope it helped :)

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the temperature at noon was -27 degrees . the temperature increased by 13 degrees by 2pm . what was the temperature at 2pm
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First, you would create an equation for this problem. 
-27 + 13

Now, all you would have to do is solve it. 
-27 + 13 = -14

By 2 pm the temperature was -14 degrees. 

I hope this helps!
5 0
3 years ago
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Help help math math
iragen [17]

Answer:

864ft^3

Step-by-step explanation:

Divide the diameter by 2 to get the radius

12 / 2 = 6

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4/3 * 3 * 6^3

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A 8-kg load stretches an elastic belt 0.02 m. How much will a 12-kg load stretch the belt?
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Answer:

A 12-kg load stretches an elastic the belt 0.03m

Step-by-step explanation:

we know A 8-kg load stretches an elastic belt 0.02 m.

=> 0.02 / 8 = 0.0025

so A 1-kg load can stretch an elastic belt 0.02 m.

=> 12 * 0.0025 = 0.03 m

A 12-kg load stretches an elastic the belt 0.03m

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3 years ago
How to prove the isosceles triangle
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Answer:

2 angles have the same °

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A compression wave is moving away from an explosion at 100 ft/sec. How fast is the volume within the spherical compression wave
stepladder [879]

The volume within the spherical compression wave increasing in t = 4 seconds is:64000000π cubic ft/sec.

<h3>Volume of a sphere</h3>

Given:

dr/dt=100 ft/sec

When: t=4 seconds, radius(r)=400ft

Hence:

Volume of a sphere (V)=4/3πr³

dv/dt=4/3π.3r² dr/dt

dv/dt=4πr²dt/dr

When t=4 seconds

dv/dt=4π×(100×4)²×100 cubic ft/sec

dv/dt=4π×(400)²×100 cubic ft/sec

dv/dt=64000000π cubic ft/sec

Therefore the volume within the spherical compression wave increasing in t = 4 seconds is:64000000π cubic ft/sec.

Learn more about Volume of a sphere here:brainly.com/question/22807400

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4 0
2 years ago
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