odinmorton
odinmorton odinmorton
  • 01-01-2019
  • Mathematics
contestada

solve this system of linear equations. Separate the x- and y-values with a comma. 20x = -58 - 2y 17x = -49 - 2y

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 01-01-2019

Answer:

(-3,1)

Step-by-step explanation:

20x = -58 - 2y

17x = -49 - 2y

I will use elimination to solve this system of equations

Multiply the second equation by -1

-1* 17x = -1 *(-49 - 2y)

-17x = -49 +2y

Add the first equation and the modified second equation

20x = -58 - 2y

-17x = +49 +2y

-----------------------

3x   = -9

Divide each side by 3

3x/3 = -9/3

x=-3

But we still need to find y

17x = -49 -27

17*-3 =-49 -2y

-51 = -49 -2y

Add 49 to each side

-51+49 = -49+49 -2y

-2 = -2y

Divide by -2

-2/-2 = -2y/-2

1 =y

Answer Link

Otras preguntas

How is President Eisenhower's domestic agenda best categorized? centrist and extremely limited in scope conservative and focused on reducing federal spending li
how do you solve 130 cm plus 50 mm
Why Do People Have Back Dimples?
A compound is made up of iron and oxygen, only. The ratio of iron ions to oxide ions is 2:3 in this compound. The IUPAC name for this compound is (1) triiron di
solving systems of equations by substitution y=9×-9 y=9
how to say wrong in french
An atom of which element has the greatest attraction for electrons in a chemical bond? (1) As (3) Ge (2) Ga (4) Se
Which formula represents a nonpolar molecule? (1) HCl (3) NH3 (2) H2O (4) CH4
When an Arrhenius acid dissolves in water, the only positive ion in the solution is (1) H+ (3) Na+ (2) Li+ (4) K+
describe how supply-side fiscal policy can be used to stimulate the economy