Evaluate by using scientific notation and the laws of exponents. Leave you answer in scientific notation.
-$\frac { ( 5,000,000 ) ( 78,000 ) } { 39,000,000,000 }$
A) $1.0$
B) $1.0 \times 10 ^ { 1 }$
C) $1.0 \times 10 ^ { - 1 }$
D) $1.0 \times 2$

Question

Quizplus · Accepted Answer

First, convert all numbers to scientific notation: $5,000,000 = 5 \times 10^6$, $78,000 = 7.8 \times 10^4$, $39,000,000,000 = 3.9 \times 10^{10}$. Then, $\frac{(5 \times 10^6)(7.8 \times 10^4)}{3.9 \times 10^{10}} = \frac{39 \times 10^{10}}{3.9 \times 10^{10}} = 10 = 1.0 \times 10^1$.

Evaluate by Using Scientific Notation and the Laws of Exponents (5,000,000)(78,000)39,000,000,000\frac { ( 5,000,000 ) ( 78,000 ) } { 39,000,000,000 }39,000,000,000(5,000,000)(78,000)​

Evaluate by Using Scientific Notation and the Laws of Exponents $\frac { ( 5,000,000 ) ( 78,000 ) } { 39,000,000,000 }$