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3 years ago

11

What is (10+x)^2 ?????????????????

1 answer:

Lapatulllka [165]3 years ago

4 0

(10+×)^2
expand
(10+x)(10+x)
multiply
100+10x+10x+x^2
add
100+20x+x^2
rearrange

x^2+20x+100
if this is what you mean this is the answer if you want to know what x is just set ()=0 and solve
x+10=0
x=-10
but I believe you are asking for the equation hope that helps let me know :)

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The length of the rug is 4 ft.

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Explanation:

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The length of the rug be l.

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Thus, the length of the rug is $l=1.5+w$

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Solving the expression using the quadratic formula,

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Thus,

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H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8

χ2 = (n - 1) . s^2 / σ^2

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