Step-by-step explanation:
-(-4)²+7(-2)⁴-2(-3)³
=16+7(16)-2(-27)
=15+112+54
=181
A) The dishwasher uses the most energy.
B) The coffee maker produces heat which is a useful form of energy. The machine also produces sound which is an unwanted form of energy. This coffee maker has a voltage of 230V.
C) The power rating (W) is 230 times larger than the current used (A).
Answer:
8 times more 8*2 1/2 = 20 pounds.
Step-by-step explanation:
