briannaleppert briannaleppert

13-10-2017
Mathematics

contestada

what is the solution of the following system 4x-y=15 3x+2y=-8

Respuesta :

kishorrock1315ow60os kishorrock1315ow60os

13-10-2017

from the first equation we get

y=4x-15

put the value of y in the second equation

3x+2(4x-15)= -8
3x+8x-30= -8
11x=22
x=2

now put x=2 in any one eqn , say in first

4(2)-y=15
8-y=15
-y=7
y=-7

hope you understand!

Answer Link

Otras preguntas

Prompt: Should the drinking age be lowered? Write an intro paragraph of why it should or shouldn't be lowered and pls noooo links! Have a great day!!

Which relationships have the same constant of proportionality between y and x as the following table? y 4 32 7 56 8 64 Choose 3 answers:

6(33 - w) = 90 solve for w entre your answer in the box w =

I need _______ help moving these boxes. a. any b. many c. some d. Least

The style of a gnome is _____.

Friction is generated when _____ interact with each other on sliding surfaces. solids molecules forces fluids

State the postulate for each

i don’t know the answer to this question

Solve the math problem

Select the correct answer. Tracy wants to start a computer coding club at her neighborhood youth center. The center requires at least 10 people to form a club.