What is the simplified expression for 5 a b + 9 a b minus a b?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2