3 years ago

explain how to write and solve an equation to find an unknown side length of a rectangle when given the perimeter.

1 answer:

Trava [24]3 years ago

5 0

A squared plus b squared = c squared will help

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aliina [53]

Answer:

2a+8 (square root b)................. third option

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RoseWind [281]

Angelica is 23

Steps
Use the equation x=2j-5
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tankabanditka [31]

Answer:

x² + x = 42

Step-by-step explanation:

Let the number be x then the square of this number is x²

Sum and equate to 42, that is

x² + x = 42

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Sliva [168]

$a_1=11+(1-1)(4)=11+0=11\\\\a_2=11+(2-1)(4)=11+4=15$

so:

$a_2=a_1+\,?\\\\15=11+\,?\\\\\boxed{?=4}$

Answer B.

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