Answer:
A
Step-by-step explanation:
The formula that relates current, power and resistance is

Where
I is the current (in amperes)
P is the power (in watts)
R is the resistance (in ohms)
We know P = 500 and R = 25, we plug them into the formula and solve for I:

Correct answer is 4.47 Amperes, or choice A.
Answer:
unknown
Step-by-step explanation:
15 times 3.14
I think its b or c but my best guess would be b
Subtract 3 first so it would be 7x=15
then divide by 7 so x would be approximately 2.14
X=75
y=75
z=105
as you do 42 + 63=105