Joyeria28 Joyeria28

20-04-2015
Mathematics

Answered

Hello, I need help solving the system of equations by substitution method.

Thanks,

4x+2y=108
x=-5y

Answer :

Crinckle Crinckle

20-04-2015

4(-5y) + 2y = 180

-20y + 2y = 180

-18y = 180

y = -10
x = 50

Answer Link

Panoyin Panoyin

20-04-2015

4x + 2y = 108
x = -5y

4(-5y) + 2y = 108
-20y + 2y = 108
-18x = 108
-18    -18
   x = 6
4(6) + 2y = 108
24 + 2y = 108
- 24    - 24
   2y = 84
      2 2
   y = 41
      (x, y) = (6, 41)

Answer Link

Other Questions

What is 5.6 × 10^−3 yd/year in feet per day? A.6.813 × 10^−7 ft/day B.6.132 × 10^−6 ft/day C.5 × 10^−6 ft/day D.4.6 × 10^−5 ft/dayPlease explain the ans

Your parents order an oven from England. The temperature dial on the new oven is calibrated in degrees Celsius. If you need to bake a cake at 350°F in the new

I cant figure out what 14/15 - 7/12 is. I have tried for 30 minutes and I cant figure it out.

What two fractions are equivalent to 42/70

Which nation in North America has the most state divisions? Canada Mexico United States Nova Scotia

I need help to find the expanded form of 39,012

A rectangle has a width of 46 centimeters and a perimeter of 208 centimeters. What is the rectangles length

What is two numbers whose difference is 25.6

What do we call elements that always travel in pairs?

Write 50/12 as a mixed number.