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Vitek1552 [10]
3 years ago
7

I don't get 7/8n-3=5/8n+12??

Mathematics
2 answers:
Natali [406]3 years ago
5 0
Hey there, subtract 5/8n from both sides, 7/8n-3-5/8n+12-5/8n=1/4n-3=12, add 3 to both sides, 1/4n-3+3=12+3=1/4n=15, multiply both sides by 4, 4*1/4n=4*15, 4*15=60. So, n=60
stepan [7]3 years ago
4 0
7/8n - 3 = 5/8n + 12
(7n)/8 - 3 = (5n)/8 + 12
7n - 24 = 5n + 96
7n = 5n + 96 + 24
7n = 5n + 120
7n - 5n = 120
2n = 120
n = 120/2
n = 60

The answer is: n = 60
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PART A:
Find the rate of change between 1980 and 1989
d for P₁ = 80 - 60
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PART B:
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The rate of change in P₁ is 40 hundred per year. The rate of change in P₂ is -12 hundred per year.
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3 years ago
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Step-by-step explanation:

1.s^13

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