miaowla miaowla
  • 04-03-2019
  • Mathematics
contestada

8X +6Y+4
Y=-3X+9
using substitution what numbers are the variables X and Y

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 04-03-2019

Answer:

(5,6)

Step-by-step explanation:

8X +6Y=4

Y=-3X+9

Substitute the second equation into the first.  Every place you see y put -3x+9)

8x +6(-3x+9)=4

Distribute

8x-18x +54 = 4

Combine like terms

-10x +54 = 5

Subtract 54 from each side

-10x +54-54=4-54

-10x = -50

Divide by -10

-10x/-10 = -50/-10

x= 5

Now we need to find y

y = -3x+9

y = -3(5) +9

y = -15+9

y= 6

(5,6)

Answer Link

Otras preguntas

How do you get the answer for 10 millimeters increased by 30%
in a fluid-filled container why is the pressure greater at the base of the container
What is half of 15 in simplest form
A $220 tablet is on sale at half price for $110. You have a coupon for 20% off the sale price. If you use your coupon to buy the tablet, what percent of the ori
The process of making cloth through interlacing the threads on a loom is called ____________.
why should the united states and Canada protect their natural vegetation
Which answer best describes how the Supreme Court viewed Maryland's taxing of the national bank created after the War of 1812? The Supreme Court decided Marylan
Can someone help me . Thanks . Work is due tomorrow
I need help with #4 and if you can help me with #5 that would be great thx
Improving muscular strength and endurance slows bone density loss.