nikki8133 nikki8133

04-12-2019
Mathematics

contestada

Solve the system using elimination.
3x + 5y = 55
5x + 4y = 57

Respuesta :

Yang100 Yang100

04-12-2019

Answer:

x=5, y=8. (5, 8).

Step-by-step explanation:

3x+5y=55

5x+4y=57

---------------

5(3x+5y)=5(55)

-3(5x+4y)=-3(57)

-------------------------

15x+25y=275

-15x-12y=-171

---------------------

13y=104

y=104/13

y=8

3x+5(8)=55

3x+40=55

3x=55-40

3x=15

x=15/3

x=5

Answer Link

Otras preguntas

What is 2 times 3 times 48 times 87

How does the Civil War affect us today?

Which of the following sentences is correct about the Emancipation Proclamation? The Emancipation Proclamation has two main purposes: to award freedom and ident

Which form of nitrogen can immediately be used by plants

why you think participation is more important than competition

Please help me on these two ! Very confused

solve for the quadratic equation x^2-3x+4

A cardboard box holds 31.25 cubic inches of creamy butter. The butter is molded into a square prism that is 5 inches long. How much cardboard would it take to

SUBMIT Question 1 of 10 Multiple Choice: Please select the best answer and click "submit." Which leadership characteristic became more important after the inven

(18) POINTS Select the correct answer. please