radomes.openskiesproject.org
misspiniasc misspiniasc
  • 21-05-2015
  • Mathematics
Answered

Systems of equations in two variables with applications


-2x+7y=2

3x-5y=-14

Verified Answer :

apologiabiology
apologiabiology apologiabiology
  • 21-05-2015

onne way is to eliminate terms
-2x+7y=2
3x-5y=-14
multiply first equation by 3 and second equaiton by 2
-6x+21y=6
6x-10y=-28
add them together to cancel x terms
-6x+21y=6
6x-10y=-28  +
0x+11y=-22
11y=-22
divide by 11
y=-2
subsitute
-2x+7(-2)=2
-2x-14=2
add 14 to both sides
-2x=16
divide both sides by 2
-x=8
multiply -1
x=-8



x=-8
y=-2
in (x,y) form
(-8,-2)

Answer Link

Related Questions

What algebraic property does this statement show 3 7 2 3 7 2 aassociative property bcommutative property cclosure property dsymmetric property
Jenny has 50 square tile she arranges the tiles into a recatugular array of 4 rows how may tile will be left over
Euglenoids are freshwater protists that are both photosynthetic and
Weather and climate are different because weather is less predictable while climate is predictable weather changes have a global impact while climate changes ha
the distance around the lake is 075 miles Derek ran 08 of the distance on saturday how far did he run
An antonym is a word thats A opposite in meaning B pronounced the same C the same in meaning D defined in a thesaurus
Which answer lists the levels of the biosphere from smallest to largest left to right a individualpopulationbiomecommunityecosystem b ecosystembiomecommunitypop
class as an object factory
How is natural law theory an example of biomedical ethics class
Why do we need antibodies