This is how you work it out:
u + xy
Plug in your numbers that you know:
20 + 9 * 8
20 + 72
92
The answer is 9
One square is equal to one. for the rest just substitute the x and y for the given values
Answer:

Step-by-step explanation:
Given
-
× -
( negative times negative = positive )
=
×
( cancel the 4 on the numerator and denominator )
= 
Step-by-step explanation:
a power supply, a load suited to the power supply, and wiring as a conductor
Answer:
30,114.3%
Step-by-step explanation:
Use the percent increase formula:
((new value - initial value) / initial value) x 100
Plug in the values:
((211,500 - 700) / 700) x 100
(210,800 / 700) x 100
= 30,114.29
So, the percent increase is 30,114.3%