14. Two line segments are congruent if they have length.

Step-by-step explanation:

Two line segments are congruent if they have the same length. They do not need to have the same position or orientation. ... For example, AB=CD because AB and CD represent the length of the lines.

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168