02-06-2017
Mathematics

contestada

What is the solution to the system of equations x-y=-1 and x-3y = 13

Respuesta :

Osiris7 Osiris7

02-06-2017

Using process of substitution.

x-y+y=-1+y

x=-1+y

Now substitute into x-3y=13

-1+y-3y=13
-1+1-2y=13+1
-2y=14

y=-7

Therefore, x= -8

Answer Link

Otras preguntas

Economic imperialism is a behavior in which powerful countries OA. enforce strict laws that weaken rival countries' economies B. exploit natural resources and c

If the difference of p(x)=ax^4/5 + x^3/3 -2x^2/5 + bx/7 -1 and q(x)= x^4/5 + x^3/4 -1/3 x^2 +1/2 x + 3 is h(x) =1/5 x^4 + 1/12 x^3 - 1/15 x^2 + 5/14 x - C then

evaluate the expression when n=5 n^(2)-6n 6

The quotient of a number divided by 4 is 32.WhatWhat is the number

Proofreading The Carrington Event is the name we use to describe the geomagnetic affects of a powerful solar storm during the 1st and 2nd of September 1859. Dur

explain why the powder should not be used in boiling water

PLEASEEEEEEEEEEEEEEEEEEEEEEEEEE

the derivative of cotxlet y =cotx

8 sin4(θ) = cos(4θ) − 4 cos(2θ) + 3 Verify, assume that all quantities are defined

What two regions are the most challenging for transportation in Africa therefore making trade more difficult, and having a negative effect on the economies ther