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Alenkinab [10]
3 years ago
8

Ella earns $7.50 per hour baby-sitting, plus a $20 travel fee. Desiree earns $9.50 per hour walking dogs, plus a $12 supply fee.

How many hours must the girls work to earn an equal amount of money?
i need the equation and the solving steps : )
Mathematics
1 answer:
Lilit [14]3 years ago
4 0
I’m pretty sure the equation is 7.50x+20=9.50x+12 then you subtract the x over and now it’ll be -2x+20=12 and then you do 12 - 20 and that is -8 and then -8 divided by -2 and that is 4. so maybe x equals 4? then plug it in and now you have to check your answer so you plug in the 4 and it is 7.50(4)+20=9.50(4)+12 and then that is 50=50. I MAY BE TOTALLY WRONG. but i tried to help at least
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8 0
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Need help with this
zepelin [54]

Answer:

4.2 is your answer rounded to the nearest tenth.

Step-by-step explanation:

8/17 is equal to 0.470588235294.

In order to make an equivalent fraction with 9 as the denominator, divide 9 by 17 to get 0.529411764705.

Then, multiply 0.529411764705 by 8 to get 4.235294117647.

4.235294117647 is our <em>u</em><em>.</em>

Simplified to the nearest tenth it is 4.2.

we can double check our answer by taking 4.235294117647 divided by 9. You should get 0.470588235294.

Hope this helps!

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4 years ago
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Alex73 [517]

Answer:

3.92699 radians

Step-by-step explanation:

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if π=3.14 and 180=1/2 of a circle. than 3.92699 would be the answer

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