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sukhopar [10]
2 years ago
13

Simplify and find value. a 3x^3−x^3+5x^3−9x^3 if x=−1

Mathematics
2 answers:
Snowcat [4.5K]2 years ago
7 0

Answer:

the answer is 2

Step-by-step explanation:

so when you simplify this problem you have to put (-1) in parentheses and then you multiply each number by itself and if it's an addition you add it.

balandron [24]2 years ago
4 0

Answer:

I think it is 2

Sorry if I got it wrong

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A mechanic makes $350 /week. If 20% of his income is deducted for taxes, how muchd id the mechanic bring home as pay?
klemol [59]

Answer:

$280

Step-by-step explanation:

Step one

Given data

A mechanic makes $350 /week

20% of his income is deducted for taxes

Required

the mechanic's take-home pay for the week

Step two:

let us find 20% of $350

=20/100*350

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=$70

Therefore the take-home pay is

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8 0
3 years ago
This equation has one soulution 5(x-1)+3x=7(x+1) what is the soulution
Aloiza [94]

Answer:

X=6

Step-by-step explanation:

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So the answer is X=6

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2 years ago
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marysya [2.9K]
A, plug in 12 for x and -7 for y to get you’re answer
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3 years ago
Which of the following sets of points forms a linear function?
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A. x=0, y=a*0+b=5, b=5
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