rebekahrocha75
rebekahrocha75 rebekahrocha75
  • 08-03-2017
  • Mathematics
contestada

HELP

x + 2y = -6

3x + 8y = -20

Solve this system using elimination. Write your answer as an ordered pair.

Respuesta :

texaschic101
texaschic101 texaschic101
  • 08-03-2017
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

Combine like terms: 2y^2 + 2(4y^2 − 3)
40% of Oatypop cereal boxes contain a prize. Hannah plans to keep buying cereal until she gets a prize. What is the probability that Hannah only to buy 3 or les
why was mussolini’s tactic of portraying fascism as protection against communism successful in italy?
20POINTS!! Many hypotheses that are supported by testing and accepted can be grouped together in a(n)______.
How do you solve this?
Write these spelling words in alphabetical order. Alphabetize them to the second letter. Pearl, serpent, turnip, curl, sternly, purpose, dirty
I don't get it so please help me soon
Help please! Cats can be striped, which is dominant to being solid. They can also have pointed (dominant) or round (recessive) claws. If a heterozygous stripe
how did the supreme court decision in Marbury v. madison strengthen the federal judiciary
HELP!Which of the sets of ordered pairs represents a function?P = {(6, −7), (3, −2), (−9, 2), (−5, −7)}Q = {(−7, 8), (4, −6), (−3, 1), (1, 5)}Only POnly QBoth P
good job