On a number line, what is the distance between -42.7 and -3.8? 39.1
38.9
-38.9
46.5

-38.9

Step-by-step explanation:

It's basic math

-42.7 - (-3.8) = -38.9

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

16

step-by-step explanation:

2 x 40 = 80

80/5

= 16