zwide747mnguni
zwide747mnguni
10-04-2018
Mathematics
contestada
solve 2x+y=10
4x+7=40
Respuesta :
theweeknd14
theweeknd14
10-04-2018
2x + y = 10 is
y = -2x + 10
4x + 7 = 40
-7
-7
4x = 33
4 4
x = 8.25
y = -2(8.25) + 10
y = -6.5 and x = 8.25
Hope this helps :)
Answer Link
popalabdulqayou
popalabdulqayou
10-04-2018
2x+y=10
4x+7y=40
use the elimination property.
1st, -2(2x+y=10) to get :
-4x-2y=-20
4x+7y=40
5y=20
y=4
then plug back to one of the equations for ex: 4x+7(4)=40 then solve it
and
x = 3 so the point is (3,4)
Answer Link
VER TODAS LAS RESPUESTAS ( 81+ )
Otras preguntas
The surface area of a die is 600 mm squared. What is the volume of the die?
£72 shared in the ratio of 2:7
87 less than the quotient of an unknown number and 43 is -75
John paid $34 for two algebra and three geometry books. He paid $36 for three algebra and two geometry books. What is the cost of each book?
Jill drives 75 1/3 miles every hour.how many miles can Jill drive in 8 3/4 hours?
what is the GCF of 12,20,26
15) What is the frequency of a pendulum that is moving at 30 m/s with a wavelength of .35 m? show step by step
what is the difference between work and power
inequality: more than 2,500 people attended the convention.
68/80 as a fraction,percent,and decimal