kamora97 kamora97

02-04-2021
Mathematics

contestada

What is the solution to the following system of equations?

{y=−3x−7
{x+2y=11
A. (1,9)
B. ( 8,-5)
C. (-5,8)
D. (9,1)

Respuesta :

meowmeow223334 meowmeow223334

02-04-2021

You can use substitution
Plug in -3x - 7 for y in second equation
x + 2(-3x - 7) = 11
x - 6x - 14 = 11
-5x = 25, x = -5
Plug plug -5 for x in first equation
Y = -3(-5) - 7
Y = 15-7, y = 8

Solution: C. (-5,8)

Answer Link

Otras preguntas

What type of trend is caused by changes in the characteristics of a population?

What is the history of development of the energy source?

Give me 3 ratios that are equal to 40/50 75/100 and 21/18

How do you keep a really bored student entertained?

Which of the following was a belief held by Progressive reformers

Of the shoes in nina's closet, 1/2 are sandals. Of the sandals, 1/2 are brown. What fractionn of nina 's shoes are brown sandals?

Which of the following best names significant threats to water quality in the United States?

What is the formula you use to determine the gravitational potential energy of a object

whats a birthing center

What rhetorical device is being used in the sentence? They have chained, bound, and gagged our freedom. A. Parallelism B. Diction C. Analogy D. Previewing