How to work out an exterior angle

There are several ways to prove that a shape is a parallelogram. Describe the various ways and provide a proof using one of the methods you describe.

Chris Nazarro had total travel expenses of $872. His transportation cost was $136. The hotel cost was $210 and business materials cost $500. If his lunch cost 30% of his dinner, how much was dinner to the nearest cent?

If the area of a square is 121 what is the length of one side

What is 6x - 3y if x = 5 and y = 3

A number was written on the board. One student increased the number by 23, but another student decreased the number by 1. The first student's result was 7 times greater than the result of the second student. What is the number written on the board?

7 divided by 11187.4

Six more than the quotient of four and a number x as an expression

Write a word problem for 3x20sec=t

When solvinga literal equation, what is the trick for isolating a variable that appears more than once?

How may times can 5 go into 64.5?