jevanbils jevanbils
  • 04-04-2017
  • Mathematics
contestada

9x + 5y = 28 5x + 9y = 56 The solution set for the system of equations is . NextReset

Respuesta :

irspow
irspow irspow
  • 04-04-2017
5(9x+5y=28)-9(5x+9y=56)=0

(45x+25y=140)-(45x+81y=504)=0

45x+25y-45x-81y=-364

-56y=-364

y=6.5, now use either original equation to solve for x...

9x+5(6.5)=28

9x+32.5=28

9x=-4.5

x=-0.5

So the single solution (x,y) is (-0.5, 6.5)


Answer Link
tbabii tbabii
  • 04-04-2017
The solution set would be (-0.5,6.5). Make sure to put the negative first since it is the smaller number.
Answer Link

Otras preguntas

Which American wrote A Farewell to Arms and The Sun Also Rises?Ernest ​
did i do this right if not can you show me how to do it
Read the description about daily life on the Oregon Trail. Then, answer the questions. The daily break was called . The average day on the trail started early,
PLS HELP I WILL GIVE BRAINLIEST WHOMEVER HAS A APPROPRIATE LEGIT ANSWER
i think the first one is right but i dont really know. pls help with all :)
Jessica spent 2/5 of her money going to the movies. Then she babysat her brother and earned fifteen more dollars. If she ended up with thirty dollars, how much
6(3x +5 ) = 7(2x +2)
Help me answer these Nat Turner Rebellion Questions. (THIS IS NOT OPTIONAL) (THIS IS DUE BY 7:30 PM) (THIS IS NO JOKE) 1. What impact did the Nat Turner Rebell
A $61.50 video game is 78% off. How much do you pay? PLEASE HELP ME
how do i do this cause im confused