Use scientific notation to solve the problem.
-The distance from the earth to the sun is 92,900,000 miles. How long would it take a rocket, traveling a $2.9 \times 10 ^ { 3 }$ miles per hour, to reach the sun?
A) $3.2 \times 10 ^ { 4 } \mathrm { hr }$
B) $3.2 \times 10 ^ { 2 } \mathrm { hr }$
C) $3.2 \times 10 ^ { 3 } \mathrm { hr }$
D) $3.2 \mathrm { hr }$

Question

Use scientific notation to solve the problem.
-The distance from the earth to the sun is 92,900,000 miles. How long would it take a rocket, traveling a $2.9 \times 10 ^ { 3 }$ miles per hour, to reach the sun? 
A) $3.2 \times 10 ^ { 4 } \mathrm { hr }$
B) $3.2 \times 10 ^ { 2 } \mathrm { hr }$
C) $3.2 \times 10 ^ { 3 } \mathrm { hr }$
D) $3.2 \mathrm { hr }$

Quizplus · Accepted Answer

To find the time, divide the distance by the speed: $ \frac{92,900,000 \text{ miles}}{2.9 \times 10^3 \text{ miles/hr}} = 32,000 \text{ hr} = 3.2 \times 10^4 \text{ hr}$.

Use Scientific Notation to Solve the Problem 2.9×1032.9 \times 10 ^ { 3 }2.9×103

Use Scientific Notation to Solve the Problem $2.9 \times 10 ^ { 3 }$