radomes.openskiesproject.org
kaidelhaj13 kaidelhaj13
  • 13-02-2017
  • Mathematics
Answered

Solve using substitution.


x + 3y = -13

5x + 7y = -9

Verified Answer :

Anonymous Anonymous
  • 13-02-2017

from equation 1
x = -3y-13
plug this into equation 2:-
5(-3y-13) + 7y = -9
-15y - 65 + 7y = -9
-8y = 56
y = -7 
Now plug y = 7 into equation 1
x - 21 = -13
x =  -13 + 21 = 8

solution is x = 8 , y = -7

Answer Link

Related Questions

a particle starts moving from point 235Displacement for the particle is vector 4i2j kThe final coordinate of the a particle is
write 680705 in expanded form
A rivers is the flat wide area of land along side of it
LaToya decides to join a gym for a minimum of one month to train for a triathlon The gym charges a beginners fee of 100 and a monthly fee of 38 If x represents
A bookstore is having a sale in which you can get 4 notebooks for 700 and 10 folders for 250 How much will it cost Rico to buy 5 notebooks and 6 folders
Who set up Georgia Presbyterians Catholics philanthropists Quakers Calvinists
When did bill clinton become president of the united states
An interest group is a a collection of people who disagree on various issues b group of people who have agreed to vote in the same way c group of protestors des
S gt NP VP NP gtDET N VP gt V NP Which of these is a kernel sentence that would match these phrase structure rules
do what purpose was the environmental protection agency established