2 years ago

Subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12

Mathematics

1 answer:

timofeeve [1]2 years ago

4 0

Answer:

answer is 2

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

From triangle ADB,

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$|AD|^2=20^2-16^2$

$|AD|^2=400-256$

$|AD|^2=144$

$|AD|=\sqrt{144}$

$|AD|=12$

From triangle ADC,

$|CD|^2+12^2=15^2$

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$|CD|^2=225-144$

$|CD|^2=81$

$|CD|=9$

The perimeter is the distance around the figure.

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3 years ago

Subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12​

Subtract (2/7 -5/21 ) from the sum of 3/4, 5/7 and 7/12