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dusya [7]
3 years ago
14

Let C be between D and E. Solve for x DC = 5x + 8 CE = 3x + 5 DE = 61

Mathematics
1 answer:
morpeh [17]3 years ago
8 0
DE/2 = 30.5
CE=30.5
DC=30.5

3x + 5 = 30.5
3x = 30.5 - 5
3x = 25.5
25.5/3 =8.5
x=8.5
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Answer:

y = 20 + .5x

Step-by-step explanation:

Suppose that a cell phone monthly rate plan costs the user 5 cents per minute beyond a fixed monthly fee of $20. This implies that the relationship between monthly cost and monthly number of minutes is linear. Write an equation that relates total monthly cost to monthly minutes used.

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If k(x) = 2x² -3.Vx, then k(9) is
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