2 years ago

Solve system by elimination -9x - y =-19 5x + y = 15

Mathematics

1 answer:

vredina [299]2 years ago

6 0

Answer:

(1, 10 )

Step-by-step explanation:

Given the 2 equations

- 9x - y = - 19 → (1)

5x + y = 15 → (2)

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

- 4x + 0 = - 4

- 4x = - 4 ( divide both sides by - 4 )

x = 1

Substitute x = 1 into either of the 2 equations and solve for y

Substituting into (2)

5(1) + y = 15

5 + y = 15 ( subtract 5 from both sides )

y = 10

solution is (1, 10 )

You might be interested in

(-1)(-11) please solve!!

Zinaida [17]

Answer:

A positive 11

Step-by-step explanation:

11 is your answer

8 0

3 years ago

Describe how to use Scientific Notation to write a very large number. Give an example, written in both Standard Form and Scienti

mel-nik [20]

A short way of writing really large numbers or really small numbers
Ex:
360,000,000 is written in scientific nation as.. 3.6 x 10^8

5 0

3 years ago

Find the inverse of 6x^2-7

valina [46]

This would be the correct answer

6 0

2 years ago

Read 2 more answers

Sarah counts the stamps in his collection. Steven has three more than twice as many stamps as Sarah. if Sarah has n stamps, writ

kondaur [170]

Answer:

3x2=6

Step-by-step explanation:

steven has three times as much as sahrah so she is going to have 6 stamps

6 0

3 years ago

Read 2 more answers

Last year ,Chesa made 32 one-cup servings of soup for a school party . This year, she will make two times the amount of the soup

Gnoma [55]

Answer:

Chesa will make 4 gallons of soup this year.

Step-by-step explanation:

If you multiply 32 times 2 you will get 64. You then find out how many cups are in a gallon. If 16 cups are in a gallon, you then divide 64 by 16. Your answer should be 4.

6 0

3 years ago

Read 2 more answers