Agame that cost $45 is on sale for 30% off. what is the sale price?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)