lauratmoore lauratmoore

14-10-2016
Mathematics

contestada

8x -y=2. 5x-4y=3 please help solve this system by substition method

Respuesta :

mecca99 mecca99

14-10-2016

8x-y=2 ---> y=8x-2
5x-4y=3

5x-4(8x-2)=3
5x-32x+8=3
-27x+8=3
-27x=-5
x= 5/27

8(5/27)-y=2
40/27-y=2
y=-14/27

Answer Link

Otras preguntas

find the product of (4x − 3)(2x^2 − 7x 1). 8x^3 − 22x^2 17x− 3 8x^3 8x^2 4x − 3 8x^3 − 34x^2 25x − 3 8x^3 − 42x^2 25x − 3

All of the following are necessary for a Neolithic culture to evolve into a civilization, EXCEPT __________.Select one of the options below as your answer: A.

what is 6 cups of flour and 2/3 cup of butter write the ratio of the amount of flour to the amount of butter as a fraction in simplest form.

Elements in the same period have the same number of valence electrons. True or False

1. adventures of huckleberry finn is celebrated in part for its representation of what perspective? A. modern B. optimistic C. Southern 2. in Adventures of Hu

1. Which of the following helped fuel economic growth by encouraging people to buy American goods? (1 point) monopolies patents protective tariffs laissez-fa

how do cells move potassium ions against a concentration gradient, from a lower concentration to a higher one

In the xy-plane, the line x + y=k, where k is a constant, is tangent to the graph of y=x^2+3x+1. What is the value of k?

contraceptive methods can be behavioral,barrier,or hormonal.which of these is a barrier method of contraception? a) birth control patch b) birth control pill c)

what's the value of trigonometric function : cosecant (-1410 °)