04-06-2018
Mathematics

contestada

slove the system of equations 3x-7y=5 and 9y=5x+5

Respuesta :

jinc0930 jinc0930

04-06-2018

3x-7y=5

9y=5x+5
-5x+9y=5

3x-7y=-5x+9y
8x=16y
x=16y/8
x=2y

3(2y)-7y=5
-1y=5
y=-5

-5(9)=5x+5
-45-5=5x
x=-10

Answer Link

Otras preguntas

A wise man once said 400 reduced by 3 times my age is 112 what is his age

Would someone please help me with my french? Thank you so much!

Aids is an infectious disease that has reached epidemic proportions. describe the nature of this disease and identify two ways to prevent or control the spread

(Hobbit by JR Tolkins)What kind of creatures inhabited the valley of Rivendell and helped the travelers find the Last Homely Home? (chapter 3) A elves B trolls

If a person lives in the southern hemisphere,what season does they most likely experience in August, explain why it's not the same season as in the northern hem

which incidents in the story help you infer that ted is determined?

Can someone please help me with this problem? I'm not very good at math and neither is the rest of my family so they can't really help me.

What happens if syphilis is left untreated??

Number 21 please help

Infer a scientist places 25mL of a yellow substance into a 50-mL container. the substances quickly fills the entire container. Is it a solid liquid or gas