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Deffense [45]
3 years ago
11

A mother is now nine times as old as her son. In four years' time she will be five times as old as her son.What are their presen

t ages
Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

son = 4

mom=36

m = 9s

m + 4 = 5(s+4)

m + 4 = 5s + 20

9s + 4 = 5s + 20

4s = 16

s = 4

m = 36

Step-by-step explanation:

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Some rectangles have an area of 36 cm². Let the variable W represent the width of these rectangles. Which expression represents
ZanzabumX [31]

Answer:

The perimeter of the rectangle is expressed as; P = \frac{72 \ + \ 2W^2}{W}

Step-by-step explanation:

Given;

area of the rectangle, A = 36  cm²

width of the rectangle, = W

Let L represent the length of the rectangle,

A = L x W

L = \frac{A}{W} = \frac{36}{W}

The perimeter of the rectangle is calculated as;

P = 2(L + W)

Substitute the value of L into the above equation;

P = 2(L + W)\\\\P = 2 (\frac{36}{W} + W)\\\\P = 2 (\frac{36 + W^2}{W} )\\\\P = \frac{72 \ + \ 2W^2}{W}

Thus, the perimeter of the rectangle is expressed as P = \frac{72 \ + \ 2W^2}{W}

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3 years ago
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Harlamova29_29 [7]
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7 0
3 years ago
Confused number 17 and it got cut off but it says more than
snow_lady [41]
Hi!
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6 0
3 years ago
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yulyashka [42]

Answer:

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Step-by-step explanation:

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4 years ago
Read 2 more answers
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