chocolatemilk94 chocolatemilk94

01-11-2019
Mathematics

contestada

Urgent

Use a matrix to find the solution to the system of equations.

X-5y = -5
-4x-2y = 20

A. (-5,-5)
B. (-5,0)
C. (0,5)
D. (-5,5)

Urgent Use a matrix to find the solution to the system of equations X5y 5 4x2y 20 A 55 B 50 C 05 D 55 class=

Respuesta :

clemenskk clemenskk

01-11-2019

Answer:

B. (-5,0)

Step-by-step explanation:

-2(X-5Y=-5) -5(-4X-2Y=20)

-2X-10Y=10 -subtract- 20X-10Y=-100 = -22X=110

_________

-22X

X=-5

Now substitute x with -5 to find Y which makes y=0

Answer Link

Otras preguntas

22. a. In 1990, Nadezhda Ryashkina set the record for the 10,000 m race-walking event. She finished this race in 41 minutes 56.23 seconds. What was Ryashkina's

Solve 14−2x=28 using the replacement set {−21, −7, 7} . A. −21 B. −7 C. 7 D. I don't know.

What kind of fire is the phlebotomist most likely to encounter?

There is a people living in the Saudi Arabia Peninsula. united diversity of

Hi can someone please help me with this. (For the introduction of the essay)

The equation 7(v-5)=-21 is solved in several steps below. For each step, choose the reason that best justifies it.

Find FH FH = {Blank}

Given n(J) = 255, n(K) = 186 and n(J ∪ K) = 429, find n(J ∩ K).

Simplify:(4x^2 - 2x) - (-5x^2 - 8x) aye could yall help a brother out?

a data set includes the following numbers: nineteen over 4, two and one fifth, 85%, and 3.24. part a: what is the order of the numbers from least to greatest?