marten9876 marten9876

29-04-2015
Mathematics

Answered

Solve the system of equations by elimination.

2x+8y=10

-4x-9y=-13

x = y =

Answer :

apologiabiology apologiabiology

29-04-2015

so use cancelation
multiply first equation by 2
2x+8y=10
times 2
4x+16y=20
now add

4x+16y=20
-4x-9y=-13 +
0x+7y=7
7y=7
divide by 7
y=1

subsittue

2x+8y=10
2x+8(1)=10
2x+8=10
subtract 8 from both sides
2x=2
divide by 2
x=1

x=1
y=1

Answer Link

Other Questions

Help me evaluate3pq when p2 and q6

I am greater than 4 tens and less than 5 tens I have 9 ones what number am I

How did the decline of copper prices in the 1980s affect Chile aIt was good for Chiles economy but it increased population bIt caused the government to diversif

Jenny spent 35 minutes doing research on the Internet She finished at 710pm At which time did Jenny start her research

1 three fourths seven tenths

Shonda made a model of a solid ice cream cone with a spherical scoop of ice cream on top made out of clay Which formulas are needed to calculate how much clay s

What number to the 4th power makes 256

A water balloon is catapulted into the air so that its height in meters after t seconds is h 49t 27t 24 How High is the balloon after 3 seconds

What did Horatio Gates do Why was it important

Help me please this is worth 27 points I GIVE THANKS ANSWER ALL QUESTIONS TOO