Solve for x, y and z

3x - 3y + 5z = 13

5x + 6y - 2z = 10

7x + 5y = 18

Scott earns $5 for each lawn he mows. On Saturday he mowed 6 lawns, and on Sunday he mowed 8 lawns. Which of the following expressions represents how much Scott earned for the weekend (in dollars) ? A. 5*6+8 B. 5 (6 + 8) C. 5*8+6 D. 6 (5 + 8)

We collected a sample of the prices of new homes. The mean of our sample is $250,000, with a standard deviation of $15,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual.

Is this question proportional? why or why not Carmine is ordering video games. Each game costs $39.99, and there is $4.85 shipping charge per order. How much will it cost him to order any amount of video games?

12.33 to the nearest tenth

What is the solution to the inequality 0.8x+20<1.2x-40? A x<-30 B x>150 C x>-30 D 19860

Jerry drew an obtuse angle. Which could be the measure of his angle?

A library charges a late return fee of 3.50 plus $0.15 per day that a book is returned late write a equation to find the total late fee f for any numbers of days late d

What is the product of 45.67 x 32.58?

If you apply the changes below to the linear parent function f (x) = x what is the equation of the new function vertically compress by 1/4 over the y-axis

A science class measured the mass of a balloon to be 4 grams. After the balloon was inflated the mass was 8 grams. What was the mass of the air inside the inflated balloon?