In constructing the Mall of America in Minnesota, a total of 1.3 x 10 (to the 4th power) tons of steel were used. The Eiffel Tower in Paris, France consist of 7 x 10 (to the 3rd power) tons of steel. About how many times the amount of steel it took to construct the tower did it take to construct the mall> Round your answer to the nearest hundredth.

you will have to divide , not multiply

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To find the answer, you need to multiply the amount of steel used to construct the Mall of America by the amount used to construct the Eiffel Tower.

(1.3 x 10^4) x (7 x 10^3)

To multiply numbers in scientific notation, you multiply the coefficients and add the exponents:

(1.3 x 7) x (10^4 x 10^3)

= (9.1) x (10^(4+3))

= 9.1 x 10^7

Therefore, it took approximately 9.1 x 10^7 tons of steel to construct the Mall of America.

To find out how many times the amount of steel used to construct the Mall of America is compared to the amount used for the Eiffel Tower, you need to multiply the two values together and then divide the result by the amount used for the Eiffel Tower.

First, let's multiply the two values:
(1.3 x 10^4) x (7 x 10^3)

When multiplying numbers in scientific notation, you can multiply the coefficients (1.3 x 7 = 9.1) and add the exponents (10^4 x 10^3 = 10^7). So, the equation becomes:

9.1 x 10^7

Now, to find how many times the amount used for the Mall of America is compared to the Eiffel Tower, divide the result by the amount used for the Eiffel Tower:

9.1 x 10^7 / (7 x 10^3)

To divide numbers in scientific notation, divide the coefficients (9.1 / 7 ≈ 1.3) and subtract the exponents (10^7 / 10^3 = 10^4). Therefore:

1.3 x 10^4

Rounded to the nearest hundredth, the amount of steel used to construct the Mall of America is approximately 1.30 times the amount used for the Eiffel Tower.