boybaby boybaby

03-01-2020
Mathematics

contestada

what is the solution of the systrem 2x - y = -7 4x - y = -4

Respuesta :

Yang100 Yang100

03-01-2020

Answer:

x=3/2, y=10. (3/2, 10).

Step-by-step explanation:

2x-y=-7

4x-y=-4

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

-2(2x-y)=-2(-7)

4x-y=-4

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

-4x+2y=14

4x-y=-4

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

y=10

2x-10=-7

2x=-7+10

2x=3

x=3/2

Answer Link

Otras preguntas

Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.

What is the main idea of Truman's statement about the use of atomic weapons

In a class of 35 students, 25 girls averaged 92% on the last test, while the 10 boys averaged 85% on the same test. What is the average for the entire class on

Put brackets in the expression below so that it's value is 45.024. 1.6 + 3.8 * 2.4 *4.2 (*= times )

If the function h(x) represents the number of full hours that it takes a person to assemble x sets of tires in a factory, which would be an appropriate domain f

An oscillator makes four vibrations in one second. What is its period and frequency?

Locate the gerund and identify its use.Wrestling alligators seems both foolish and dangerous.

Genetic crosses Question:A brown coat is dominant to a white coat in cattle. A farmer has a brown bull. How would you determine whether the bull is a heteroz

what are the landforms of vermont

what does the agora tell us about the culture of athens?