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3 years ago

I’m begging you please please ASAP ASAP please ASAP thank you please please ASAP

Mathematics

1 answer:

kozerog [31]3 years ago

6 0

Answer:

The ratio is $\frac{2}{3}$ .

Step-by-step explanation:

The ratio of the perimeters of Quad ABCD to Quad WXYZ = $\frac{perimeter of ABCD}{perimeter of WXYZ}$

But considering sides AB and WX,

representative factor for both figures = $\frac{12}{8}$

So that;

WX = 12

XY = 1.5 x 6 = 9

YZ = 1.5 x 7 = 10.5

WZ = 1.5 x 7 = 10.5

Thus,

perimeter of Quad ABCD = 6 + 7 + 7 + 8

= 28

perimeter of Quad WXYZ = 9 + 10.5 + 10.5 + 12

= 42

The ratio of the perimeters of Quad ABCD to Quad WXYZ = $\frac{28}{42}$

= $\frac{2}{3}$

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Inessa [10]

Answer:

$7\frac{1}{4} -2\frac{5}{12} =\frac{58}{12} =4\frac{10}{12}$

Step-by-step explanation:

Given:

$7\frac{1}{4} =\frac{7\times 4 +1}{4}=\frac{29}{4}$

$2\frac{5}{12}=\frac{12\times 2+5}{12}=\frac{29}{12}$

To Find:

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Solution

Substituting the above values we get

$7\frac{1}{4} -2\frac{5}{12} =\frac{29}{4} -\frac{29}{12}$

Now make both the denominator same by multiplying and dividing by 3 to the first term so we get

$7\frac{1}{4} -2\frac{5}{12} =\frac{29\times 3}{4\times 3} -\frac{29}{12}\\\\7\frac{1}{4} -2\frac{5}{12} =\frac{87}{12} -\frac{29}{12}\\\\7\frac{1}{4} -2\frac{5}{12} =\frac{87-29}{12}\\\\7\frac{1}{4} -2\frac{5}{12} =\frac{58}{12} =4\frac{10}{12}$

∴ $7\frac{1}{4} -2\frac{5}{12} =\frac{58}{12} =4\frac{10}{12}$

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