CamCam671 CamCam671

30-11-2017
Mathematics

contestada

-x -7y = 9
-x + 9y = -23

Respuesta :

tynollette tynollette

30-11-2017

subtract the equations to eliminate x:
9y-(-7y)=-23-9
16y=-32
y=-2
plug y=-2 in either of the equation to find x:
-x-7(-2)=9
x=-5

Answer Link

Otras preguntas

A part of a line that starts at one endpoint and extends forever in one direction is a(n):

Help on these 4 with work please.

What is the best estimate for the product of 289 and 7

Which statement is true about the sign of a quotient? Check all that apply. The quotient of two negative fractions is negative. The quotient of one negative fra

A 1-day-old infant in the shadow general hospital nursery has a yellow tint to the skin. what is this called?

What number is shown with the blocks?write the number 2 tens 13 ones

When MTV first launched, explain how the station got enough content to fill 24 hours of music television.

A rectangle is 4 times as long as it is wide. if the area is 100 square feet, find its perim

which of the following statements is true about scientific theories? a Scientific theories become scientific laws b Scientific theories are never proven c Scien

(03.06 MC)Solve the equation for the letter r: d = rt