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3 years ago

9

Which expression represents the area of the rectangle?

1 answer:

Anna007 [38]3 years ago

3 0

The area of a rectangle is as follows...

Area = Base x Height

Base is given to be 3h + 5 and height is given to be 2h

Area = (3h+5)(2h) = 6h^2 + 10h which is none of the answers listed.

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To test the impact performance of a 10 cm thick gymnastics mat, a 20 kg cylindrical

denis23 [38]

Answer:

A)196J

B)-208J

C)3467J

Step-by-step explanation:

We are given that a 20 kg cylindrical mass is dropped onto the mat from a height of 1 m above the mat. During the impact, the cylinder’s vertical velocity reaches zero at the instant the mat has compressed to only 4 cm thick.

So, The Mat gets compressed by : 10cm - 4 cm = 6 cm=0.06 m

a)

Using Conservations of energy

Potential energy at the top = Kinetic energy at the point before touching the surface

Kinetic energy = mgh= $20 \times 9.8 \times 1 = 196 J$

b)

Work done by the mat do to stop the fall of the cylinder = $-mg(h+0.06)=-20 \times 9.8(1+0.06)=-208 J$

C)

Work done= $\text{Average force} \times \text{ Compression of mat}$

$208=F \times 0.06$

F=3467J

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Cory can eat 21 boiled eggs in 6 minutes. He wants to know how many minutes (m) it would take him to eat 35 boiled eggs if he ca

kipiarov [429]

Answer:c

Step-by-step explanation:

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3 years ago

Anyone need help with a subject mark me brainlist

MA_775_DIABLO [31]

Answer:

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Step-by-step explanation:

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3 years ago

if the class charges $15 per ticket write an equation that could be used to determine the number of tickets the class would need

OverLord2011 [107]

t = number of tickets

15t ≥ 1500

so....

step 1. 15t ≥ 1500 --> divide both sides by 15 --> 15t/15 ≥ 1500/15

step 2. t ≥ 100

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I hope this helps. :)

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