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Dmitry_Shevchenko [17]
3 years ago
6

-8=-2(z+7) [solving linear equations ]

Mathematics
2 answers:
Sveta_85 [38]3 years ago
8 0
Z=-3 is the correct answer. Use math papa if you need help with the steps on how we got z=-3
hoa [83]3 years ago
7 0

-8=-2(z+7)

-8=-2z-14

-2z-8=-14

-2z=-6

Z=3

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Degger [83]

Let x = pounds of $12 per pound coffee

then

20-x = pounds of $9 per pound coffee

.

12x + 9(20-x) = 10(20)

12x + 180 - 9x = 200

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3 years ago
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4 0
3 years ago
Emily is entering a bicycle race for charity. Her mother pledges $0.80 for every 0.25 mile she bikes. If Emily bikes 5 miles, ho
e-lub [12.9K]

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cross multiply:

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3 0
1 year ago
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