if d varies jointly as e and f, and d = 120 when e = 5 and f = 4. Find d when e = 8 and f = 5
NONSENSE ANSWER, would be reported.
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if d varies jointly as e and f, and d = 120 when e = 5 and f = 4. Find d when e = 8 and f = 5
NONSENSE ANSWER, would be reported.
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Answer:
d = 240
Step-by-step explanation:
d = 120 when e = 5 and f = 4, we get:
120 = (5)(4)k
120 = 20k
Divide each side by 20 to solve for k:
120/20 = 20k/20
k = 6
Solve the second part of the variation equation:
Because we have found our relationship constant k = 6, we form our new variation equation:
d = 6ef
Since we were given that e = 8, f = 5, we have
d = 6 x 8 x 5
d = 240
Answer:
d = 240
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