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balu736 [363]
3 years ago
10

Circle has a radius of 25 ft which of the following values is closest to the area of the circle in square feet a 80 B 160 C 310

D 1960 or E 7850

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0
To find the area that is the closest, use the formula for finding the area of a circle.

A = pi x r^2
      3.14 x 25^2
A = 1962.5 square feet

This is closest to answer choice D.
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Write an equation of the line that passes through a pair of points:
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The  equation of the line that passes through a pair of points

   y  = \frac{-1}{8}  ( x ) -\frac{11}{8}

Step-by-step explanation:

 Explanation:-

Given points are ( 5 ,-2) and ( 3,-1)

slope of the line

                        m = \frac{y_{2} -y_{1} }{x_{2}-x_{1}  } = \frac{-1-(-2)}{-3-(5)} = \frac{1}{-8}

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3 0
3 years ago
Jessica has money in two savings accounts. One rate is 11% and the other is 14%. If she has $300 more in the 14% account and the
Gelneren [198K]

Answer:

  • $272 was invested in the  savings account at 11%
  • $572  was invested in the  savings account at 14%

Step-by-step explanation:

Let the amount in the savings account with 11% interest =x

She has $300 more in the 14% account.

Therefore amount saved at 14%=x+300

Simple Interest= Principal X (Rate/100) X Time

Since, the time is not given, we assume an annual interest.

Therefore, Time =1 Year

Total Interest = $110

Now, our total interest will be a sum of the interest earned at 11% and the interest earned at 14%.

110=(x*0.11*1)+[(x+300)*0.14*1]\\110=0.11x+0.14x+42\\110=0.25x+42\\\text{Subtract 42 from both sides}\\110-42=0.25x+42-42\\68=0.25x\\\text{Divide both sides by 0.25 to obtain x}\\\frac{68}{0.25} =\frac{0.25x}{0.25} \\x=\$272

Therefore:

  • $272 was invested in the  savings account at 11%
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Cheers!

6 0
3 years ago
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