dandiesgod dandiesgod

23-03-2021
Mathematics

contestada

Solve the system of equations x + y = 4 and -9x + 7y = -84 by combining the
equations.

Respuesta :

23-03-2021

Answer:

x = 7

y = -3

Step-by-step explanation:

x + y = 4 (Multiply this by 9)

-9x + 7y = -84

9x + 9y = 36

-9x + 7y = -84

16y = -48

y = -3

x + y = 4

x - 3 = 4

x = 7

Answer Link

Otras preguntas

in ancient China, many aspects of life were ruled by the___ of Confucius.

Leo has a total of 45c. he has some dimes and pennies . How many different combinations of dimes and pennies could Leo have?make a table to solve.

which is equal to 52 tens a 52,010 , b 5,210, c 5,200 d 520

plant roots can grow through cracks and what?

is 5/12 bigger than 3/7

plant roots can grow through cracks and what?

During a soccer season, Mario made approximately 2 goal points for every 5 of his shots on goal. What is the probability that Marion would make 2 goal points o

is 5/12 bigger than 3/7

is 5/12 bigger than 3/7

Why do the track runners start at different positions on the track?