△abc has side lengths that measure 10 centimeters, 10 centimeters, and 15 centimeters. which of the following best describes this type of triangle

Two lines that do not intersect are skew. always sometimes or never

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

What are “like terms”? why can we only add like terms?