makemybacon makemybacon

12-02-2019
Mathematics

contestada

solve by elimination
5x-15y=10
3x-5y=-6

Respuesta :

12-02-2019

Multiply bottom equation by -3 to add and eliminate y’s.

So...

5x-15y=10
+-9x+15y=18

You get -4x=28 so x=-7

Plug in to get y
5(-7)-15y=10
-35-15y=10
-15y=45
So y=-3

Check in other equation
3(-7)-5(-3)=
-21+15=-6

So x= -7 and y= -3

Answer Link

Otras preguntas

Use the definition of the derivative to find f'(x) for f(x)=3x^2-5x+2

Can someone fill in the corrects forms of the words in the blanks

Drag the tiles to the boxes to form correct pairs. Match each type of economy with its pattern of production. Tiles traditional equal results for everyone marke

What is the Cc address field for?

Which of these statements about the hiring process is not true?

describe a way to determine whether a substance conducts electricity

Why is it important to keep your body in equilibrium or homeostasis?

which of the following word problems could be solved using the equation 14+6=*

A river is flowing at the rate of 1.5 miles an hour when a boy rows across it. Find the resulting speed of the boat if the boy rows at a still-water speed of 2.

which macromolecules provide instructions for growth