Solve the system of linear equations by substitution. 9. 2x+3y=25 and 4x-y=15

3w*w=48 what is w!

What percent of 24 is 78

Eggs are to be packed in cartons, each holding 12 eggs. if there are 128 eggs and as many cartons are filled as possible, how many eggs are left over?

If you are dealt 3 cards from a shuffled deck of 52 cards, find the probability that all 3 cards are clubs.

Consider the following piecewise-defined function. f (x) {x^2 - 5, x<3 {2x+5, x>3 find f (-4)

If a climber climbs 0.25 miles per day how many days would it take him to climb 3.848 miles high?

What is 6 1/2 - 2 2/3 =

Olivia has 40 coins made up of quarters and dimes. Altogether they make $7.00. How many quarters does she have? How many dimes does she have?

the cost of nails varies directly with the number of pounds bought. If 4 pounds of nails cost $11.60, what is the cost of 3.5 pounds

Line m is drawn so that it is perpendicular to two distinct planes, Q and R. What must be true about planes Q and R? A) q and r are skew B) are parallel C) perpendicular D) they intersect but are not perpendicular