cupcakekatie007 cupcakekatie007
  • 23-04-2020
  • Mathematics
contestada

Solve the system by linear combination. Show all your work.

9x+5y=35
-2x-5y=0

Respuesta :

jimrgrant1 jimrgrant1
  • 23-04-2020

Answer:

(5, - 2 )

Step-by-step explanation:

Given the 2 equations

9x + 5y = 35 → (1)

- 2x - 5y = 0 → (2)

Adding the 2 equations term by term will eliminate the y- term

7x = 35 ( divide both sides by 7 )

x = 5

Substitute x = 5 into either of the 2 equations for value of y

Substituting in (1) gives

9(5) + 5y = 35

45 + 5y = 35 ( subtract 45 from both sides )

5y = - 10 ( divide both sides by 5 )

y = - 2

Solution is (5, - 2 )

Answer Link

Otras preguntas

What is the coefficient of the 2nd term of the polynomial 2x3 + 2x2 – 3x + 1?A.3B.1C.4D.2
What were conditions like for free African Americans in the North and how did they respond?
How heavy are the most massive stones in the Great Pyramid
which is bigger 3/8 or 3/6
Which sentence uses all its subject pronouns correctly? A. Her and me decorated the house for the party. B. Him, Sean, and me went to the new movie. C. Rona
what is 302.135 rounded to the nearest tenth
A student solved this problem and said the answer is 5 pounds. Todd has two packages of hamburger. One package weighs 4/5 pound and the other weighs 9/10 poun
The Nationalist government under Chiang Kai-shek fled mainland China for _______.
SAT Question of the Day: Exotics and indigenous weeds include some of the most ------- species: their visual impact often eclipses that of nearby plants. (A) le
I'm stuck on number 4... help please?