This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: x + 3y = 32-3x + 2y = 3 Answer: x+3y = 32-3x+2y = 3 Using Substitution Method First equation, y = 32/3 = 10.6666666666667 Second equation, -3x+2y = 3, or, -3x = 3-2y = -18.3333333333333 x = -18.3333333333333/ (-3) = 6.11111111111111. 4. Solve the system of equations x + y = 5 x - y = -9 Answer: Solve for x and y x+x+9=5 2x+9=5-9 -9 2x=-4 X= -2 5. Ricks Paint Store sells a special shade of pink paint (Ricky's Blush) which can be made from red paint and white paint. The amount of red paint should be three times the amount of white paint. How much of each kind of paint is needed to make 264 gallons of Ricky's Blush? Answer: x = amount (gals) of white paint 3x = amount (gals) of red paint x + 3x = 264 4x = 264 x = 264/4 x = 66 gals (white paint) Red paint: 3x = 3(66) = 198 gals...
View Full Document
- Spring '11