The sum of -9 and a number A) -9-x
B)-9/x
C) 9 + x
D) -9x

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Klmn and pqrs are similar trapezoids. which side of pqrs corresponds to lm