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nikitadnepr [17]
2 years ago
12

Hello I need help on this math question​

Mathematics
1 answer:
Elanso [62]2 years ago
4 0

Answer:

615.44\ in^2

Step-by-step explanation:

The equation for the area of a circle is:

A=\pi r^2

Please note that "A" stands for "Area" and "r" stands for "radius".

We can substitute the given values into the equation:

A=\pi r^2\\A=3.14*14^2\\A=3.14*196\\A=615.44\ in^2

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What is the slope of the line that passes through the points (-7,-4) and (-11,-2)? In simplest form
Serjik [45]

Answer:

Slope=-1/2

Step-by-step explanation:

Slope =(y2-y1) /(x2-x1)

A(-7,-4).... x1 =-7,y1 =-4

B(-11,-2)... x2=-11,y1=-2

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3 years ago
Find the output, y, when the input, r, is 30.<br> y = 14 – 0.52
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Step-by-step explanation:

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3 years ago
Suppose a study of population 400,000 has been growing at rate of 7% per year if this rate continues find the population of this
inessss [21]

Answer:

680,000

Step-by-step explanation:

Population before growing rate: 400,000

Growing rate: 7%

Duration: 10 years

___

First, you will have to calculate how much does the population increase each year with the said rate, so you will have to multiply the rate by the population to determine that amount.

400,000 x 7/100 = 28,000

So the population increases by 28,000 each year, now you will have to multiply that amount by the amount of years to determine how much the amount of increase.

28,000 x 10 = 280,000

This means that the population has increased by 280,000 in these 10 years. Finally, you will have to add that number to the population amount to get the answer.

400,000 + 280,000 = 680,000

4 0
3 years ago
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