01-03-2020
Mathematics

contestada

-7x + y = -19
–2x+3y=-19

Respuesta :

adekuadenike30 adekuadenike30

01-03-2020

Answer:x=3,y=-5

Step-by-step explanation:

-7x+y=-19...(1)

-2x+3y=-19...(2)

Subject of formula from (1)

Y=-19+7x....(3)

Substitute (3) into (2)

-2x+3(-19+7x)=-19

-2x-57+21x=-19

Collect like terms

-2x+21x=-19+57

19x=38

X=2

Substitute x=2 to equation (3)

Y=-19+7(2)

Y=-19+14

Y=-5

X=2 and y=-5

Answer Link

Otras preguntas

What do scientists do to easily share measurement data they can understand? a. They use their own standard of measurement. b. Scientists do not share m

PLEASE HELP WILL MARK BRAINEIST

Who invented the cotton gin?

___ connect phrases or clauses.

Suppose f(x) = abx is an exponential GROWTH function. Which function, then, represents exponential DECAY? A) f(x) = abx B) f(x) = abx - 4 C) f(x) = a(b-1)x D)

Find the x and y intercepts of the following line : 5x-3y=15

some one who is responsible and self disiplend displays witch personality trait

How did the United States exert control over the Philippines?

What allows reactions to take place to take place at a normal body temperature? A Enzymes add additional energy to chemical reactions. B Carbohydrates provide

PLEASE HELP ! What is the value of the function at x = 3? Enter your answer in the box.