Question

The Empire State Building weighs about 7.3×108pounds. The One World Trade Center building weighs about 88,200,000 pounds. What is the total weight, in pounds, of these two buildings? Expressing your answer in scientific notation in the form a×10b, what are the values of a and b?

Answer 1

Answer:

$8.182X10^8 pounds$

a=8.182 and b=8

Step-by-step explanation:

Weight of the Empire State Building =$7.3X 10^8$ pounds.

Weight of the One World Trade Center building= 88,200,000 pounds.

=$8.82 X 10^7$

The addition of the two:

$=7.3X 10^8+8.82 X 10^7\\ To make it easier to add, express both as powers of 8\\=7.3X 10^8+0.882 X 10^8\\=(7.3+0.882)X10^8\\=8.182X10^8 pounds$

Comparing with the form: $aX10^b$

a=8.182 and b=8