3 years ago

Simplify the expression: – 10x + – 4 – 8 + 7x

Mathematics

2 answers:

Ivan3 years ago

5 0

Answer:

-3x-12

Step-by-step explanation:

-10x-4-8+7x

-3x-4-8

-3x-12

Ivanshal [37]3 years ago

5 0

Answer:

-3x-12

Step-by-step explanation:

– 10x + – 4 – 8 + 7x

Combine like terms

-10x +7x -4-8

-3x -12

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The area of a rectangle is 65 m2 , and the length of the rectangle is 3 m less than twice the width. find the dimensions of the

salantis [7]

X = <span>width
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</span> $x(2x-3) = 65\\
2x^2 - 3x - 65 = 0 \\ D=b^2-4ac=(-3)^2-4*2*(-65)=529\\
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width = 6.5 m
length = 2x-3 = 2*6.5 - 3 = 10 m

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telo118 [61]

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2 years ago

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Fittoniya [83]

Answer:

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Step-by-step explanation: