shippy2003 shippy2003

01-12-2020
Mathematics

contestada

10x + 4y = 20
13x - 4y = -66
If x = -2, what is the value of y?

Respuesta :

jovemarlie07 jovemarlie07

01-12-2020

Answer:

y = 10

Step-by-step explanation:

If x = -2

10x + 4y = 20

10(-2) + 4y=20

-20+4y=20

4y= 20+20

4y=40

y=10

If x=2 and y=10

13x - 4y = -66

13(-2) - 4(10) =-66

-26 -(-40) = 66 so it all checks out!!

Answer Link

Otras preguntas

In H. G. Wells's The Time Machine, what is the function of the wells? They manufacture goods for the Eloi. They are used to cook Eloi. They are ventilators for

Which statement is an example of an observation the student could have made

The figure shown is a rectangle. If you draw a new rectangle in which the dimensions are doubled, what is the relationship between the PERIMETERS of the two rec

6. Fats, oils, and cholesterol are types of lipids. True False

What is the difference between a carbon footprint and an ecological, or global, footprint?

The way you spend your time and energy is your _____. career lifestyle occupation leisure time

(7x-6y) and (x+y) What is the sum?

How did the magna carta, english bill of rights, mayflower compact , and thomas paine common sense influence colonist views of government ?

Which word in the sentence, if any, should be followed by a comma? I will see you in the morning my friends. A. morning B. There is no error in comma usage.

what is Cayley graph?