ashleyaddison ashleyaddison

11-08-2017
Mathematics

contestada

w many solutions does this linear system have?y = 2x – 5 –8x – 4y = –20

Respuesta :

kphung76127 kphung76127

11-08-2017

Using substitution

-8x-4(2x-5)=-20
-8x-8x+20=-20
-16x+20=-20
-16x=-40
x=2.5

Plug x into one of the original equations.
y=2(2.5)-5
y=5-5
y=0

Final answer: 1 solution (2.5, 0)

Answer Link

Otras preguntas

What holds the sides of the dna ladder together?

What factors would directly affect an enzyme function? And how do they affect the function?

on tuesday 14/25 of the souvenirs pirchased at the zoo gift shop were stuffed animal. of the stuffed animals puchased 10/21 were bears. what fraction of the so

Glycolysis ends in the production of _____. carbon dioxide glycogen pyruvic acid enzymes

The term _______ can be defined as a signal that is continuous over a period of time as opposed to digital, which is a non-continuous signal. analog digital dig

How many miles can Margie drive on $20 worth of gas

What country was known as the Hermit Kingdom? a.Japan b. Qing Dynasty c. Korea d.Britain

Why is most of the population of South America in the middle latitudes?

kevin can run a mile in 7 mins. which is the most reasonable time for him to run a 10-km race? a. 20 mins b. 43 mins c. 52 mins d. 61 mins

The endosymbiotic theory helps to explain the origin of which structures