Schraff404 Schraff404
  • 06-08-2015
  • Mathematics
contestada

Solve the following system of equations: x - 2y = 14 x + 3y = 9
a. (1, 12)
b. (-1, -12)
c. (12, -1)
d. (12, 1)

Respuesta :

Аноним Аноним
  • 06-08-2015
solve your system of equations step by step.

x−2y=14;x+3y=9

Solve x−2y=14 for x:

x−2y+2y=14+2y (Add 2y to both sides)

x=2y+14

Substitute (2y+14) for x in x+3y=9:

x+3y=9

2y+14+3y=9

5y+14=9(Simplify both sides of the equation)

5y+14+−14=9+−14 (Add -14 to both sides)

5y=−5

5y5=−55 (Divide both sides by 5)

y=−1

Substitute (−1) for y in x=2y+14:

x=2y+14

x=(2)(−1)+14

x=12(Simplify both sides of the equation)



So,

y=-1
x=12

Answer is C)

Answer Link

Otras preguntas

Organisms need a way of storing energy because _____. a. a cell can't always immediately use all the energy it gets b. an organism often has times when no energ
Suppose you cut a rectangle in half. What kinds of shapes can you make? Describe how you can arrange the parts to make a shape that is Not a rectangleTahsin
why can water pass through sandstrone but not through shale
what is greater 5/6 7/12 or 7/10
What is the middle number when the numbers {8, –2.4, 3.2, –1.5, 1.3} are ordered from least to greatest?
what is the solution of the equation 5x=35
What is the answer to 11+5+3x2+8x1=?
Sea water contains roughly 158.0g of Nacl per liter. What is the molarity of sodium chloride in sea water?
The force requires to maintain an object at constant velocity in free space is equal to ?
How does the market determine the price and the quantities supplied and demanded?