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

Please help me What is the difference between 14n +7 and 8n + 3/4

whats the answer to this?

Explain what occurs as a result of an antipsychotic drug side effect known as tardive dyskinesia.

What is the purpose of establishing economic sanctions? to enter into an alliance with a country to honor the terms of a trade agreement to pressure a nation to

How do you think a soldier might feel after returning from fighting in WW2 only to still treated as a second class citizen?

Is it .. “ why do it says pending “ or “ why do it say pending “ ?

In the parallelogram shown, find the measure of ∠A.

I’m confused on what to do.

Question 12 of 25 Which is the most likely reason a writer would include a flash-forward? O A. To signal that the reader may stop reading before the end B. To c

What’s your favorite genre(s) of music?