The bases of a trapezoid are 16.8 yards and 6.9 yards. what is the average of the two bases?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Agroup of students want to create a garden. they do not know the exact measurements but they propose using a variable to represent the length and width of the garden. the length of the garden is 10 feet longer than double the width. use a single variable to write algebraic expressions for both the length and width of the garden. write an algebraic expression for the area of the garden. use mathematical terms to describe this expression.

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared