Round the number to the place of the underlined digit and the number is 324,650

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

What additional information could be used to prove abc =mqr using sas? check all that apply.