3 years ago

A runner starts from rest and accelerates uniformly to a speed of 8.0 meters per

Mathematics

1 answer:

ivanzaharov [21]3 years ago

4 0

2 m/s²

Step-by-step explanation:

Step 1:

Let the initial velocity be 0 m/s and the final velocity be 8 m/s and the time traveled is 4 s.

From the basic science,

Acceleration = ( Final Velocity - Initial Velocity) / Time

Step 2:

Acceleration = (8-0)/4

2 m/s²

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The best and most correct answer among the choices provided by your question is the second choice or letter B "20".

The current area is 120(80)=9600 and he want to expand it by 4400 so that the new area will be 9600+4400=14000

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14000=9600+200x+x^2

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(x+220)(x-20)=0, since x is an increase it must be greater than zero so

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