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WITCHER [35]
3 years ago
10

Solve the inequality-9<-1/5x

Mathematics
1 answer:
jek_recluse [69]3 years ago
8 0

Simplify 1/5x to x/5

-9 < -x/5

Multiply both sides by 5

-9 × 5 < -x

Simplify -9 × 5 to -45

-45 < -x

Multiply both sides by -1

45 > x

Switch sides

<u>x < 45 </u>

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Solve this system of equations by elimination:<br><br> 8x+9y=48<br> 12x+5y=21
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Answer:

Let's solve your system of equations by elimination.

8x+9y=48;12x+5y=21

Steps:

Multiply the first equation by 5,and multiply the second equation by -9.

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Becomes:

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Add these equations to eliminate y:

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Then solve−68x=51for x:

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Now that we've found x let's plug it back in to solve for y.

Write down an original equation:

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Substitute

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9y−6+6=48+6 (Add 6 to both sides)

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9y /9  =  54 /9  (Divide both sides by 9)   y=6

<em><u>Answer:  x=  −3 /4  and y=6</u></em>

Hope This Helps!  Have A Nice Day!!

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