What is the multiplier?

A. 0.123

B. 0.111

C. 9

D. 81​

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81