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3 years ago

GIVING 15 POINTS!!! PLEASE HELP

Mathematics

1 answer:

Lena [83]3 years ago

6 0

1) |−11| = 11, therefore Peter is at a distance of 11 feet

2) Jimmy, because each of the two points is fraction 5 over 8 unit away from 0

3) 36 + 28=64 4x4=36+4x7=28 36+28=64

7+9=16 4x16=64

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Rudiy27

Answer:

Area of the rectangle is increasing with the rate of 84 cm/s.

Step-by-step explanation:

Let l represents the length, w represents width, t represents time ( in seconds ) and A represents the area of the triangle,

Given,

$\frac{dl}{dt}=6\text{ cm per second}$

$\frac{dw}{dt}=5\text{ cm per second}$

Also, l = 12 cm and w = 4 cm,

We know that,

A = l × w,

Differentiating with respect to t,

$\frac{dA}{dt}=\frac{d}{dt}(l\times w)$

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By substituting the values,

$\frac{dA}{dt}=12\times 5+4\times 6$

$=60+24$

$=84$

Hence, the area of the rectangle is increasing with the rate of 84 cm/s.

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