# To express: the distance in miles. ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071 ### Precalculus: Mathematics for Calcu...

6th Edition
Stewart + 5 others
Publisher: Cengage Learning
ISBN: 9780840068071

#### Solutions

Chapter 1.2, Problem 95E
To determine

## To express: the distance in miles.

Expert Solution

The star nearest to our solar system is 2.5×1013mi .

### Explanation of Solution

Given information:

Proxima Centauri, the star nearest to our solar system, is 4.3 light-years away.

Concept used:

Scientific notation:

A notation in which a given quantity can be expressed as a number with significant digits required for a specified degree of accuracy and multiplied by 10 to the appropriate power.

Calculation:

The star nearest to our system is 4.3 light −years away

For a light year, the distance that light travels in one year is about 5900000000000 mi.

The star nearest to our solar system is

4.3×5900000000000=25370000000000=2.5×1013mi

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