Answer:
(D) xy/(x + y)
Step-by-step explanation:
To find r in terms of x and y
Given,
- two resistors with resistances x and y are connected in parallel
- r is the combined resistance of these two resistors
- the reciprocal of r is equal to the sum of the reciprocals of x and y
Then,
1/r = 1/x + 1/y
1/r = (y + x)/xy
Find the reciprocal of both sides
r = xy/(x + y)
The right answer is option (D) xy/(x + y)
Answer:
N = - 4
V =5
Step-by-step explanation:
-3(s-1) + 5s
we are going to distribute the -3 through the parenthesis...all that means is multiply -3 by everything in the parenthesis.
-3 * s + (-3)* -1 + 5s
-3s + 3 + 5s...now we combine like terms
-3s + 5s + 3 =
2s + 3
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Answer:
51
Step-by-step explanation: