Simplify the expression. Write the answer using scientific notation. (9 x 10) ^2 (2 x 10) ^10

A) 1.8 x 10^21

B) 1.8 x 10^13

C) 1.1 x 10^13

D) 1.1 x 10^21

Question

Mathematics

Rex Brooks

11 January, 06:37

Simplify the expression. Write the answer using scientific notation. (9 x 10) ^2 (2 x 10) ^10

A) 1.8 x 10^21

B) 1.8 x 10^13

C) 1.1 x 10^13

D) 1.1 x 10^21

+5

Answers (1)

Know the Answer?

Blevins · Answer 1

B

Step-by-step explanation:

To multiply scientific notation, multiply each part of the number.

(9 x 10) ^2 (2 x 10) ^10 = (9*2) * (10^ 2 + 10) = 18 * 10 ^ 12

Since scientific notation can only have a digit in the ones place from 1-9. 18*10^12 becomes 1.8*10^13.

The solution is B.

Simplify the expression. Write the answer using scientific notation. (9 x 10) ^2 (2 x 10) ^10A) 1.8 x 10^21B) 1.8 x 10^13C) 1.1 x 10^13D) 1.1 x 10^21

Simplify the expression. Write the answer using scientific notation. (9 x 10) ^2 (2 x 10) ^10

A) 1.8 x 10^21

B) 1.8 x 10^13

C) 1.1 x 10^13

D) 1.1 x 10^21