Select all that apply. which of the following represents the proportion 6 is to 9 as 12 is to 18?

1. 6/9 = 12/18
2. 6: 9: 12: 18
3. 6/18 = 9/12
4. 6/12 = 9/18

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

What should be done to both sides of the equation in order to solve -5m = -40? a) multiply by -5. b) divide by -5. c) multiply by -40. d) divide by -40.

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?