The sum of the two digits of a number is 9. if the tens digit is one-half the units digit, what is the number? let t = the tens digit, u = the units digit, and t + u = 9. which of the following equations would complete the system? t = 1/2u t = 1/2t u=1/2t u=1/2u

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Is it greater than or less than7*3_9*2