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8_murik_8 [283]
3 years ago
15

Distribute and simplify: 7 (2x - 4) + 2 (3x + 1)

Mathematics
1 answer:
Alenkinab [10]3 years ago
3 0
7(2x-4)+2(3x+1)\\\\[(7*2x)+(7*-4)]+[(2*3x)+(2*1)]\\\\(14x-28)+(6x+2)\\\\14x+6x-28+2\\\\\\20x-25
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Solve using the elimination method. 5r-2s=21 & 2r+5s=20
cestrela7 [59]
I hope this is correct. I solved it using the addition elimination method. The answer is s= 2, and r= 5. I hope that was helpful.
5 0
3 years ago
Tom earned $72 walking dogs for 6 hours. How many total hours will it take tom to earn $96 in all? Solve using unit rates
slava [35]

Answer:

8 hours

Step-by-step explanation:

Step one:

Given data

Tom earned $72 walking dogs for 6 hours

amount earned = $72

time taken = 6 hours

Required

The time taken to earn $96

Step two:

let us find the unit rate of his earning

unit rate = 72/6

= 12 per hour

 

In 1 hour Tom earns $12

in x hours he will earn $96

cross multiply we have

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divide both sides by 12

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3 0
3 years ago
The denominator of a rational number is greater than its numerator by 5. If 5 is subtracted from the numerator and 4 is added to
nasty-shy [4]

Answer:

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Step-by-step explanation:

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x-5/x+9=⅛

x-5=⅛(x+9)

x-5=⅛x+1⅛

x-⅛x=1⅛+5

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A rational number is a fraction

4 0
3 years ago
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Naddika [18.5K]

Answer:

Step-by-step explanation:

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4 0
3 years ago
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denpristay [2]

<u>60 percent *34 </u>

<u>=( 60:100)*34 =</u>

<u>( 60*34):100 =</u>

<u>2040:100 = 20.4</u>

6 0
2 years ago
Read 2 more answers
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