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Nina [5.8K]
3 years ago
14

If a polygon is a square or a rectangle one may find the perimeter by

Mathematics
1 answer:
DaniilM [7]3 years ago
5 0
Périmètre rectangle = 2 ( longueur + largeur)

périmètre carré  = 4 x côté
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Step-by-step explanation:

3 0
2 years ago
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Find two consecutive positive integers such that the sum of their squares is 421 .
maria [59]
We assume the two numbers are x and (x+1)
so x^2+(x+1)^2=421
x^2+(x^2+2x+1)=421
2x^2+2x-420=0
According to the formula of quadratic 
x=14 or-15
cuz we know the two numbers are integers
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To make sure that's correct
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4 0
3 years ago
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Step-by-step explanation:

6 0
2 years ago
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When an oil tank is 7/12 full, it contains 5 1/4 gallons. How many gallons does it hold when full
blondinia [14]
<h3>Answer:</h3>

The tank can hold up to 9 gallons.

Quick Review:

By doing the inverse of 7/12, 12/7, when you multiply it, you'll get a value of 1.

7/12 * 12/7 = 1

Doing the Problem:

By multiplying 5 1/4 by 12/7, you'll get the answer. But first, convert 5 1/4 into an improper fraction.

5 1/4 ---> 21/4

Okay, lets go!

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Hope that helps, :)

6 0
3 years ago
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