The astronomical unit (AU) is the mean distance from the sun to the earth.

1 AU = 1.5 * 10, superscript, 8, baseline, km (kilometers)

If a comet is 2.3 AU from the earth, how many km away is the comet?

Answer Options with 5 options

A.

3.45 * 10, superscript, 8, baseline, km

B.

6.52 * 10, superscript, 7, baseline, km

C.

3500 km

D.

3.45 * 10, superscript, 10, baseline, km

E.

6.52 * 10, superscript, 10, baseline, km

Question

Brynlee Dalton

Mathematics

5 February, 17:55

The astronomical unit (AU) is the mean distance from the sun to the earth.

1 AU = 1.5 * 10, superscript, 8, baseline, km (kilometers)

If a comet is 2.3 AU from the earth, how many km away is the comet?

Answer Options with 5 options

A.

3.45 * 10, superscript, 8, baseline, km

B.

6.52 * 10, superscript, 7, baseline, km

C.

3500 km

D.

3.45 * 10, superscript, 10, baseline, km

E.

6.52 * 10, superscript, 10, baseline, km

+4

Answers (2)

Know the Answer?

Faith · Answer 1

A. 3.45 x 10^8 km Since 1 AU is 1.5x10^8 and the comet is 2.3 AU away from Earth, the answer is a simple matter of multiplication. So: 1.5x10^8 km * 2.3 = 3.45x10^8 km Of the available options, option "A" matches exactly.

Ann Cabrera · Answer 2

By definition, we have to

1 AU = 1.5 * 10 ^ 8Km

a comet is 2.3 AU from the earth, which means that we must transform this unit to kilometers.

2.3 AU = (2.3) * (1.5 * 10 ^ 8) = 3.45 * 10 ^ 8km

answer

3.45 * 10, superscript, 8, baseline, km