jordynb18 jordynb18
  • 01-12-2021
  • Mathematics
contestada

3x-9y=-7 ; 2y-6x=8 elimination

Respuesta :

DrRKD DrRKD
  • 01-12-2021

Answer:

x=-29/24

y=3/8

Step-by-step explanation:

3x-9y= -7 ---A

2y-6x= 8----B

multiply eq A by 2

6x-18y=-14

-6x+2y=8

Add both equations, so you eliminate x since 6x+(-6x) = 0

-18y+2y= -16y

-14+8=-6

so you have

-16y=-6

y=3/8

now substitute this back to eq B, (you can use eq A as well if you like)

2(3/8)-6x=8

3/4-6x=8

-6x=29/4

x=-29/24

Answer Link

Otras preguntas

What type of eroding effects do glaciers cause to landforms?
prove that segment AD is congruent to segment BC
-Why was Abigail conjuring spirits in the woods?
Which of the following is not an activity in which interest groups frequently engage? (pp.456-60)a) starting their own political partyb) litigationc) sponsoring
How many moles of o2 are needed to react with 12 moles of c2h6?2C2H6 + 702 — 4CO2 + 6H20
Given that a function, h, has a domain of -3 ≤ x ≤ 11 and a range of 1 ≤ h(x) ≤ 25 and that h(8) = 19 and h(-2) = 2, select the statement that could be true for
Match each function formula with the corresponding transformation of the parent function y= - (x+ 2)^2
EDMENTUM QUESTION What does the presidential title of “commander-in-chief” refer to? A. The president is author of the nation’s public policies. B. The presid
Match the fallowing iteams. 1. Discovered America for england
a function pairs each teacher with 30 students