Asked by Anonymous

Simplify the expression.

(-4)^-6(-4)^-7

My answer: -4


Simplify and give the answer in scientific notation.

(5 X 10^6((3 X 10^5)

My answer: 1.5 X 10^12


(3 X 10^6)(8 X 10^-4)

My answer: 2.4 X 10^3

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 x 1012 miles. Suppose a star is 1.23 x 102 light-years from Earth. In scientific notation, approximately how many miles is it?

12.3 x 10^12
7.23 x 10^13
7.23 x 10^14
5.88 x 10^12

C
Answered by Steve
(-4)^-6 * (-4)^-7 = (-4)^-13
(-4)^-6 / (-4)^-7 = -4

The others look good (except for the typos)
Answered by Anonymous
These are my choices for the first one:

4^13
-4
13
1
Answered by Damon
so pick -4
Answered by tony jawks
connexus right? I needed help on this one too.
Answered by Soss Boss
bruhhhh anyone have the answers
Answered by riddler
it’s -4. any negative number as a base, it doesn’t matter what exponent, is equal to 1. same with a base that has a negative number as an exponent. basically you cant use negatives so they automatically convert to 1.
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