Write a number in scientific notation Geometry

The speed of light is approximately 186,000 mi/s.

Write this number in scientific notation.

1.86\times10^5 mi/s

186 \times 10^4 mi/s

1.86\times10^{4} mi/s

1.86\times10^6 mi/s

An adult human has approximately 27,000,000,000,000 red blood cells.

Write this number in scientific notation.

2.7\times10^{13} red blood cells

27 \times 10^{10} red blood cells

2.7\times10^{11} red blood cells

2.7\times10^{9} red blood cells

The distance between the earth and the moon is 238,900 mi.

Write this number in scientific notation.

2.389 \times 10^5 mi

2\ 389 \times 10^4 mi

2.389\times10^{6} mi

2.389\times10^4 mi

The diameter of a specific virus is 0.000,000,25 m.

Write this number in scientific notation.

2.5\times10^{-7} m

2.5\times10^{-6} m

25\times10^{-6} m

2.5\times10^{-5} m

The thickness of a piece of paper is 0.00016 m.

Write this number in scientific notation.

1.6\times10^{-4} m

1.6 \times 10^{-6} m

1.6\times10^{-5} m

16\times10^{-4} m

The current world population is approximately 7,200,000,000.

Write this number in scientific notation.

7.2 \times10^9

7.2 \times10^{10}

7.2 \times10^8

7.2\times10^{7}

Length of a bacterium is 0.00004 in.

Write this number in scientific notation.

4 \times 10^{-5} in

14 \times 10^{-5} in

4\times10^{-4} in

-4\times10^5 in