bamlakaklilu bamlakaklilu

10-11-2016
Mathematics

contestada

-3x+3y=3
-5x+y=13
Solve for substitution

Respuesta :

intelplayz intelplayz

11-11-2016

Take -5x + y =13 and rearrange for y:
y=13+5x

Substitute into other equation for y:
-3x+3(13+5x)=3

Multiply out brackets:
-3x+39+15x=3

Simplify:
12x+39=3

Rearrange for x:
12x=-36
x=-3

Substitute back into y=13+5x:
y=13+5(-3)
y=13-15
y=-2

Answer Link

Otras preguntas

Nathan is an ecologist. He’s studying the effect of secondary consumers on primary consumers. His current research focuses on a population of blue jays and crow

Match the figures of speech to the excerpts from Macbeth in which they appear

How many pushups should a 12 year old be able to do?

For the following geometric sequence find the recursive formula and the 5th term in the sequence. In your final answer, include all of your work. {-4, 12, -36,

What is the distance between P(-3,-25) and Q(50,-2)

A study performed in 2008 found that 1 in _______ African Americans lacked health insurance.

“her taste for such things [might be] quite dead, and the long struggle mercifully ended at last.”

A piece of metal ore weighs 9.25 g. when a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 ml to 26.47 ml. what

How long should your face be numb after a filling?

Explain how the author creates the suspenseful moment when the Minotaur arrives. Use the passage if you need to review the story’s climax.