Answer:
A. d + c = 50
4d + 2c = 174
Step-by-step explanation:
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If we solve the left side of the given equation,
1/a + 1/b = 1/c
we get an answer of,
b+a / ab = 1/c
Since ab = c, we can conclude that b + a is 1. The average of these two numbers is equal to there sum divided by 2. The answer is therefore equal to 0.5.
The answer is D
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Answer: C
Step-by-step explanation:
Answer: -180 for -6 and -20 for 2
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