jrevans214 jrevans214
  • 01-04-2019
  • Mathematics
contestada

7x + 2y = 4
y = x + 1
Solve the system of equations.
A. (1/3, 4/3)
B. (2/9,11/9)
C. no solution

Respuesta :

meredith48034
meredith48034 meredith48034
  • 01-04-2019

[tex]7x + 2(x + 1) = 4 \\ 7x + 2x + 2 = 4 \\ 9x + 2 = 4 \\ 9x = 2 \\ x = \frac{2}{9} \\ \\ y = \frac{2}{9} + 1 = \frac{11}{9} \\ ( \frac{2}{9} \: \frac{11}{9} )[/tex]
Answer Link
barrettg211 barrettg211
  • 01-04-2019
It’s B.

y=x+1

7x+2(x+1)=4

y=x+1
9x+2=4

Subtract 4-2 from the second equation.

The we have y=x+1

9x=2

x=2/9

Then plug in x into the other equation bc now we know it!

y=2/9+1

Which is 11/9

I hope this helps!!!
Answer Link

Otras preguntas

Which statement accurately describes the relationship between cytokinesis and mitosis? a. Mitosis includes interphase and cytokinesis. b. Cytokinesis precedes m
how did the mediterranean climate influence culture in the region
Do you think there were any points at which civil war might have been averted?
what is sum of 5/8 + 5/8
A waterfall in a park is located 6 miles east and 3 miles north of the visitors center. There is a picnic site 1 mile east and 2 miles north of the visitors cen
if you solve an equation by graphing each side as a separate line, which of the following corresponds to the solution of the equation?
can you ever use a calculator to determine if a number is rational or irrational
what caused the renewal of interest in the classical civilizations of greece and rome
How did revolutionary thinkers ideas change the perception of independence
is a hectare roughly equal to 2 tennis courts or to 2 soccer fields