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Arada [10]
2 years ago
15

5% of a number is 23

Mathematics
1 answer:
AURORKA [14]2 years ago
4 0

Answer:

<h3>73.6</h3>

Step-by-step explanation:

<h3>Let the number be m</h3>

<h3>so, 5% × m = 23</h3>

<h3><u> </u><u> </u><u>5</u><u> </u><u> </u><u> </u> m = 23</h3><h3>100</h3>

<h3>m = <u> </u><u> </u><u>2</u><u>3</u><u> </u><u>×</u><u> </u><u>1</u><u>0</u><u>0</u></h3><h3> 5</h3>

<h3><u>m</u><u> </u><u> </u><u>=</u><u> </u><u> </u><u>460</u></h3>

<h3>16% of that number </h3>

<h3><u>1</u><u>6</u><u> </u> × 460 = 73.6</h3><h3>100</h3>

<h3>16% of the number is 73.6</h3>
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  • f(4) = -12
  • f(-2) = -6
  • f(2) = -10
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Put the value where the variable is and do the arithmetic.

Personally, I find it easier not to deal with so many minus signs. I would rewrite the function to ...

  f(x) = -(8 +x)

I find it easier to evaluate the series of argument values when they are in increasing order. This serves as a check, because we expect the function values to be in decreasing order.

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As always, for repetitive evaluation of the same function, a spreadsheet or graphing calculator is a handy tool.

8 0
2 years ago
I need to know the answer but it would be nice to have the steps too
Maslowich

Answer:

The perimeter of the rectangle is 27n + 1 feet

Step-by-step explanation:

The formula of the perimeter of the rectangle is P = 2(L + W), where

  • L is the length of the rectangle
  • W is the width of the rectangle

∵ The width of a rectangle is 7n - 6.5 feet

∴ W = 7n - 6.5 feet

∵ The length of the rectangle is 6.5n + 7 feet

∴ L = 6.5n + 7 feet

→ Substitute W and L in the formula of the perimeter above

∵ P = 2[6.5n + 7 + 7n - 6.5]

→ Add the like terms

∴ P = 2[(6.5n + 7n) + (7 - 6.5)]

∴ P = 2[13.5n + 0.5]

→ Multiply the terms in the bracket by 2

∴ P = 27n + 1

∴ The perimeter of the rectangle is (27n + 1) feet

3 0
3 years ago
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