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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?

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Answer:


8.182X10^8 $pounds

a=8.182 and b=8

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

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