Desiree45 Desiree45
  • 01-02-2018
  • Mathematics
contestada

How do I solve this using substitution, graphing, or elimination?

How do I solve this using substitution graphing or elimination class=

Respuesta :

theosmith
theosmith theosmith
  • 03-02-2018
Substitution
2x - 3y = -5
      +3y   +3y
2x=-5 + 3y
divide both sides by 2
x = -2.5 + 1.5y

16 - 5x = 2y
16 - 5(-2.5 + 1.5y) = 2y
16 - 12.5 + 7.5y = 2y
3.5 + 7.5y = 2y
       -7.5y    -7.5y
3.5 = -5.5y
divide both sides by -5.5
y= -0.54 repeating and then you substitute that for y into either equation to figure out what x is. Sorry, my math might be wrong, I'm a middle schooler so uhh yeah
Answer Link

Otras preguntas

How do I graph f(x)= -cos(x-pi)?
what is 8-4/5f>-14-2f
Name the two lines and the transversal that form each pair of angles
Mr Jones has 20,000 to invest. He invests part at 6% and part at 7%, if hr earns 1,280 in interest after 1 year, how much did he invest at each rate.
Prove that 2n + 1 ≤ 2n for n ≥ 3
Which of the following differs when comparing the deep ocean to the intertidal zone? •need for energy •salinity •the amount of sunlight •reliance on phytoplankt
A non-metal usually forms 2 covalent bonds in its compounds.How many electrons will it take in its valence shell?
find the derivative of ((t^4-6)^3)*((t^3+6)^4)
What chemical compound is C2HsOH?
Paula caught a tarpon with a weight that was 10 times as great as the weight of a permit fish she caught . The total weight of the two fish was 132 pounds. How