Answer:
7
Step-by-step explanation:
5p - 1 = 2p + 20
5p = 2p + 20 + 1
5p = 2p + 21
5p - 2p = 21
3p = 21
p = 7
I = / r where I = current and r = resistance
80 = k / 50 so
k = 400
so we have I = 400/r
when r = 40
I = 400/40 = 10 amps
A = l*w
61.64 = 9.2*w
w = 61.64/9.2 = 6.7
The width of the rectangle is 6.7 feet.
5.82 bc 16 divided by 2 3/4(2.75)
