I've been looking at answers for 3a+1=-3.6a (a-1) and everyone is calling a minus 1 atimes 1. why?

A driveway is 15 feet long, 10 feet wide, and 8 inches deep. How many cubic feet of concrete will be required for the driveway? Round your answer to the nearest cubic foot, if necessary.

Mr Smith had 4 daughters each daughter had a brother ... How children does Mr Smith have?

A jacket regularly sells for $55.00. It is on sale for 25% off. What is the sale price of the jacket?

A regular pentagon shares a common center with a regular hexagon. If ||, across how many lines of reflection can the combined figure be reflected to map onto itself?

What type of number is - 2343 a) whole number b) integer c) rational d) irrational

A pattern has 1,000 identical circles. If 665 of the circles are orange, what decimal represents the part of the pattern that is orange? Why? A. 665 B. 66.5 C. 6.65 D. 0.665

Perpendicular lines form angles

The cost of manufacturing A certain type of headphone varies inversely as the number of headphones increase. If 5000 headphones can be manufactured for $15.00 each find the cost to manufacture 7,500 headphones

Twice jacks age plus five is 21. Write and solve an equation. How old is jack

How can you make sure your solution is correct in a quadratic formula