The distance from earth to a certain star outside our solar system is 25,800,000,000,000 miles. Express this number in scientific notation.
A) $2.58 \times 10 ^ { - 13 }$ miles
B) $25.8 \times 10 ^ { - 12 }$ miles
C) $2.58 \times 10 ^ { 13 }$ miles
D) $2.58 \times 10 ^ { 12 }$ miles
E) $25.8 \times 10 ^ { 12 }$ miles

Question

Quizplus · Accepted Answer

To express 25,800,000,000,000 in scientific notation, we need to move the decimal point 13 places to the left, and indicate the power of 10 in the denominator. This gives us 2.58 × 10^13 miles.

The Distance from Earth to a Certain Star Outside Our 2.58×10−132.58 \times 10 ^ { - 13 }2.58×10−13

The Distance from Earth to a Certain Star Outside Our $2.58 \times 10 ^ { - 13 }$