17-03-2020
Mathematics

contestada

Use substitution to it
7) 4x – 2y=-22
-x+y=3

Respuesta :

laura1059 laura1059

17-03-2020

Rearrange -x+y = 3 to y = x+3
Then substitute into the first equation.
4x - 2(x+3)= -22
4x - 2x - 6 = -22
2x -6 = -22
2x = -16
x = -8
Then I put this into y = x+3
y = -8 + 3
y = -5

Answer Link

Otras preguntas

Asia is located in which directions from the equator and from the prime meridian?

Looking up words in a dictionary will improve reading ________ and vocabulary.

International economic organizations try to help the global economy by

Find the speed of the pendulum at the bottom of the first swing. The mass on the pendulum is 200g The mass is suspended 93 cm from the floor

what is the unit price for a piece of cheese if 1.24 pounds costs $11.25?

What word was used to refer to the Northern United States during the Civil War?

Find the best word to complete the sentence. Mark Twain’s Huckleberry Finn enjoyed a(n) ____ in 1984 when publishers celebrated its 100th anniversary with new e

Which of the following is NOT a responsibility of the vice president? a. serve as president of the Senate b. fulfill additional roles dictated by the president

X+3=0 how do I so excited this math equation

Cause and Effect why do you think the colonists were unhappy with the fact that their judges salaries were paid by the king ?