tacarter tacarter
  • 02-08-2018
  • Mathematics
contestada

A pair of equations is shown below:

y = 7x − 8
y = 5x − 2

Respuesta :

lublana
lublana lublana
  • 02-08-2018

Given equations are y = 7x − 8 and y = 5x − 2

We can solve them easily using substion.

Plug y = 7x − 8 into y = 5x − 2

7x − 8 = 5x − 2

or 7x − 5x =8 − 2

or 2x = 6

or 2x/2 = 6/2

or x=3

Now plug x=3 into any of given equations say y = 5x − 2

y = 5(3) − 2=15-2=13

Hence (3,13) is the final answer.

Answer Link

Otras preguntas

which organism would more closely resemble it's parent,one produced by asexual reproduction,or one produced by sexual reproduction? why?
if a pH of water is 5.3 then 4.3 is it 1.0 less acidic 1.0 less basic
names is often given to the journey of africans who were brought to the americas as slaves?
What is 574 in expanded form
At the concession stand of a school foot ball game, sandwiches cost $1.50 and a bottle of water costs $.90. The school sells 40 sandwiches and 80 bottles of wat
Which of the following is x⁴ + y⁴ identically equal to? (A) (x² + y²)(x + y)(x - y) (B) (x² + xy + y²)(x² - xy + y²) (C) (x² + √2xy + y²)(x² - √2xy + y²) (D) (x
which of the following organisms feeds on the largest variety of producers
Factor the polynomial 6b^2-17b+10
What is 0.75 as a fraction in simplist form
At the concession stand of a school foot ball game, sandwiches cost $1.50 and a bottle of water costs $.90. The school sells 40 sandwiches and 80 bottles of wat