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serious [3.7K]
3 years ago
12

What is 11/15 - 3/20

Mathematics
2 answers:
faust18 [17]3 years ago
6 0
11/15 - 3/20
= 11/(3*5) - 3/(4*5)
= (11*4)/(3*4*5) - (3*3)/(3*4*5)
= (44 - 9)/(3*4*5)
= 35/(3*4*5)
= (7*5)/(3*4*5)
=7/12
otez555 [7]3 years ago
3 0
The answer is 0.5833
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Please help me with the question please ASAP
erica [24]

Answer:

The ratio of perimeter of ABCD to perimeter of WXYZ = \frac{2}{3}

Step-by-step explanation:

First, we have to determine the multiplicative factor of the dimensions for both figures.

Considering sides AB and WX,

multiplicative factor = \frac{12}{8}

                                = 1.5

So that:

XY = 6 x 1.5 = 9

YZ = 7 x 1.5 = 10.5

ZW = 7 x 1.5 = 10.5

Perimeter of ABCD = 6 + 7 + 7 + 8

                                = 28

Perimeter of WXYZ = 9 + 10.5 + 10.5 + 12

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The ratio of the perimeters of the two quadrilaterals can be determined as;

ratio = \frac{perimeter of ABCD}{Perirmeter of WXYZ}

       = \frac{28}{42}

       = \frac{2}{3}

The ratio of the perimeter of ABCD to perimeter of WXYZ is \frac{2}{3}.

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2 years ago
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