angelliu11
angelliu11 angelliu11
  • 02-08-2017
  • Mathematics
contestada

Solve the following system of equations algebraically. 2x = 5y + 8. 3x + 2y = 31

Respuesta :

amandareyes200osvxh8
amandareyes200osvxh8 amandareyes200osvxh8
  • 02-08-2017

x=−12.301587 and y= 31/ 2
Answer Link
choixongdong
choixongdong choixongdong
  • 02-08-2017
2x = 5y + 8. (1st)
3x + 2y = 31 so 3x = -2y + 31 (2nd)

multiply (1st equation) by 3 and (2nd equation) by 2

6x = 15y + 24
6x = -4y + 62
-----------------------subtract
0 = 19y - 38
19y = 38
y = 2

2x = 5y + 8
2x = 5(2) + 8
2x = 18
x = 9

answer
solution (9, 2)
Answer Link

Otras preguntas

HELP PLEASE ASAP!!!!!!!!
What is 12.791 rounded to the nearest hundredth
What term do political theorists use when people elect their own representatives and expect them to respond to their desires and demands? a. government represe
More magazine is a publication designed to appeal to women aged 40 and over. demand for such magazines is an example of how changing __________ characteristics
the mass of a jar of sugar is 1.9 kg. what is the total mass of 13 jars of sugar
Help with this geometry question.
Give the three types of nuclear decay.
What is the angle (relative to the horizontal) of a 4 in 4 roof? Is it possible to have a 7 in 4 foot? Explain.
Maria purchases a premium brand of coffee at the grocery store for $8. Which would be considered a substitute good?
Because she has oversight responsibility for the servicing and repair of her company's fleet of cars, rhonda frequently calls the garage mechanic to inquire whe