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2 years ago

6

Cassie is measuring the dimensions of her bedroom wall so that she will know how much paint to buy. which of the choices shown i

s a reasonable measurement for a wall in her bedroom?

1 answer:

Gennadij [26K]2 years ago

5 0

She needs to measure the area of the wall

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the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas

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Answer:

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Step-by-step explanation:

The area of a square is given by :

$A=x^2$ ....(1)

Where

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Differentiating equation (1) wrt t.

$\dfrac{dA}{dt}=2x\times \dfrac{dx}{dt}$

When A = 81cm², the side of the square, x = 9 cm

Put all the values,

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So, the length of the side of a square is changing at the rate of 0.67 cm/s.

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3 years ago

Round 34,699 to the nearest ten thousand

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