Pixlemania14 Pixlemania14

26-05-2017
Mathematics

contestada

Solve the system of equations
3x+4y+12
9x-2y=15

Respuesta :

26-05-2017

3x+4y=12
9x-2y=15
we will use elimination
multiply 3x+4y=12 by -3

-9x-12y=-36
9x-2y=15
_________ add
-14y=-21
÷-14 both sides
y=1.5
find x
3x+4 (1.5)=12
3x+6=12
-6 both sides
3x=6
÷3 both sides
x=2

x=2
y=1.5

Answer Link

Otras preguntas

Mike ran 19.5 miles more than Carlos last week. Mike ran 35 miles. how many miles did Carlos run?

Which of the following correctly represents the chemical formula for lye? S1O1H1] SOHe Na1O1H1 NaOH

What is the steps in to solving this

please help. I can't understand anything in my biology class. It just goes right over my head.

The local Walmart sold 67 televisions on Tuesday, 79 televisions on Wednesday, 195 televisions on Saturday, and 82 televisions on Sunday. How many televisions w

Which equations are true? Choose all answers that apply: A. − x = −x + x + 0 B. − x = 0 + (−x) C. None of the above

The _____(height or width) of a sound wave determines its _____(loudness or pitch).

From which of the following perspectives is Twelve Years a Slave written? first person point of view second person point of view third person objective point of

The equation of the parabola whose focus is at (7, 0) and directrix at x = -7 is: y = (1/28)x² x = (1/28)y² x = -(1/28)y²

I need help plz asap