sanchezgirl4210 sanchezgirl4210
  • 13-12-2018
  • Mathematics
contestada


Solve the system of equations using elimination.

8x + 7y = -16
10x + 7y = -6

A)
(3, 6)


B)
(8, 5)


C)
(7, 10)


D)
(5, -8)

Respuesta :

MrGumby
MrGumby MrGumby
  • 22-02-2019

Answer:

The solution would be D) (5, -8)

Step-by-step explanation:

To use this method, start by multiplying the second equation by -1. Then add the two equations together.

8x + 7y = -16

-10x - 7y = 6

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

-2x = -10

x = 5

Now that we have the value of x, use it to solve either equation for y.

10x + 7y = -6

10(5) + 7y = -6

50 + 7y = -6

7y = -56

y = -8

Answer Link

Otras preguntas

How does Victor differ from Elizabeth, Clerval, and his parents?
The figure below shows several equipotential lines each labeled by its potential in volts. The distance between the lines of the square grid represents 3.00 cm.
How many megabytes are in 16 gigabytes? Write your answer as a whole number.
I need help please. 1. The addition transition used in sentence 2 is: (Type three words. Then click GO. ) Passage: (1)United States schools are not entirely to
A cube has height of 6 cm. Whatis the surface area of the cube?
Which operation are polynomials not closed under?
Which of the following are arithmetic sequences? Check all that apply. (picture)
What is the radius of a circle with an area of 1000π m^2?
Why is scout the person who is chosen to explain things to miss Caroline
Find the volume of a sphere whose r is 20 inches