fisherjake510 fisherjake510
  • 01-08-2017
  • Mathematics
contestada

Solve the system using elimination. x + 2y = –6 3x + 8y = –20

Respuesta :

texaschic101
texaschic101 texaschic101
  • 01-08-2017
x + 2y = -6....multiply by -3
3x + 8y = -20
---------------
-3x - 6y = 18 (result of multiplying by -3)
3x + 8y = -20
--------------add
2y = -2
y = -2/2
y = -1 <===

x + 2y = -6
x + 2(-1) = -6
x - 2 = -6
x = -6 + 2
x = -4 <==

solution is (-4,-1)
Answer Link

Otras preguntas

Which ordered pair comes from the table? X Y 2 1 3 4 4 4 5 2 A. (1,2) B. (4,3) C. (2,1) D. (2,5)
A number n is less than or equal to-7 or greater than 12
Calls to the tostring( ) method emphasize the use of ____.
Jack earns $50 for washing cars on the weekend. He makes an average of $4.25 in tips per hour. Write the function of Joe's earnings, and solve for how much he w
Does a cell phone weigh 113 grams or kilograms
A quiz consists of 20 multiple-choice questions, each with 5 possible answers. for someone who makes random guesses for all of the answers, find the probability
Energy therapies are used to treat various disease conditions. which energy therapy is derived from ancient buddhist rituals?
Find three positive numbers whose sum is 100 and whose product is a maximum. (enter your answers as a comma-separated list.)
Is 1.34 a non-terminating decimal
Teresa is jogging from her house to school. Her school is 235 miles from her house. She has gone 116 miles so far. How many miles does Teresa still have to