How many quarts of water must be added to 9 qt of an 80% antifreeze solution to make a 45% antifreeze solution?

In Exercises 23-36, solve the system using either Gaussian elimina - tion with back-substitution or Gauss-Jordan elimination. 23. x + 2y = 7 2x + y = 8 25. - x + 2y = 1.5 2x - 4y = 3

Round each factor to the nearest whole number and find the product. 14.7 · 2.5

Common binomial factor of 6x (3x+7) + 5 (3x+7)

Find number of neutrons for He

6x2/3 = write the product as mixed number in simple form

At the metal-casting company where i work, i must set up a conveyor system to move castings from the furnace to the heat treatment area 55 yards away. the castings cool at the rate of 0.

My rectangular soccer field site has a length equal to twice its width. Find its area in terms of its length x

There are 110 calories per 28.4 grams of Cereal X. Find how many calories are in 42.6 grams of this cereal

What equation is equivalent to y=2x+3?

Write as a verbal sentence: A) 5x+7=18. B) x^2-9=27. C) 8x-4=16