puddles4568p4dbcx puddles4568p4dbcx
  • 21-02-2018
  • Mathematics
contestada

this is algabra 1 i need 7,13, and 14

this is algabra 1 i need 713 and 14 class=

Respuesta :

LilLili1214 LilLili1214
  • 21-02-2018
11.)7x-4y=-30
+3x+4y=10
10x=-20
x=-2
3(-2)+4y=10
-6+4y=10
4y=4
y=1
13.)3x-y=-20
-(-7x-y=40)
3x-y=-20
+7x+y=-40
10x=-60
x=-6
3(-6)-y=-20
-18-y=-20
+18  +18
-y=-2
y=2
14.) 2x-6y=-10
-(4x-6y=10)
2x-6y=-10
-4x+6y=-10
-2x=-20
x=10
2(10)-6y=-10
20-6y=-10
-6y=-30
y=5
Answer Link

Otras preguntas

write a story to represent the division problem 6 ÷ 1/3
Which Native American group built large cities, and traded far and wide? A. Mound Builders B. Plains C. Inuit D. Cliff Dwellers
What is a problem solving by following steps to draw a conclusion?
Create an accurate summary of Marilyn Lee Cross and her reasons for being aboard the EDS. Provide your answer in two to three sentences.
Express 24.357 in words.
Why did the ancient Roman government begin the "bread and circuses" program to keep the poor fed and entertained?
how do you write in words 4.110 and 4.10?
Give four reasons why the british were able to neglect their colonies in the 1700s
If a sugar compound has 11 oxygen atoms how many hydrogen atoms does it contain
Why does Edwards claim that nonbelievers are akin to spiders in "Sinners in the Hands of an Angry God"? ". . . and your own care and prudence, and best contriva