There are 7.5E38 stars in our Galaxy. So far astronomers have mapped 0.27% of all of these stars.

1) How many stars have been mapped in our sky?

Write answer like this example "5.23E45". Round to three significant digits, "5.23"

Question

Mathematics

Sofia Moran

27 January, 14:17

There are 7.5E38 stars in our Galaxy. So far astronomers have mapped 0.27% of all of these stars.

1) How many stars have been mapped in our sky?

Write answer like this example "5.23E45". Round to three significant digits, "5.23"

+2

Answers (1)

Know the Answer?

Hamza Harvey · Answer 1

2.03E36

Step-by-step explanation:

The number mapped is the product of the total number and the fraction that are mapped:

7.5E38 *.27E-2 = 7.5*.27 E (38 - 2) = 2.025E36 ≈ 2.03E36

There are 7.5E38 stars in our Galaxy. So far astronomers have mapped 0.27% of all of these stars.1) How many stars have been mapped in our sky?Write answer like this example "5.23E45". Round to three significant digits, "5.23"

There are 7.5E38 stars in our Galaxy. So far astronomers have mapped 0.27% of all of these stars.

1) How many stars have been mapped in our sky?

Write answer like this example "5.23E45". Round to three significant digits, "5.23"