Ask
your own question, for FREE!
Mathematics
35 Online
solve by elimination 2r-5s=1 and 5r+2s=46
Still Need Help?
Join the QuestionCove community and study together with friends!
2r -5s =1 ----------(i) 5r +2s = 46 ---------(ii) (i)*2 is 4r -10s = 2 (ii)*5 is 25r +10s = 230 Add 29r = 232 Divide by 29 r = 8 2r -5s =1 2*8 -5s =1 16 -5s = 1 16 -1 = 5s 15 = 5s 3 = s Answer r = 8 and s = 3
r= (1+5s)/2 46= 5[(1+5s)/2] +2s s=3 r=8
-5(2r-5s)=1 distribute so -10r+25s=-5 2(5r+2s)=46 distribute so 10r+4s=92 29s=87, s=3. plug in to equation to get value of r
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
XShawtyX:
Helpud83dude4f All this graphing shi hurts my head like how tf do u do this????
Jasonisyours:
What were the key causes of the French Revolution in 1789?
brianagatica14:
A phone company charges $2 for the first five minutes of a phone call and 30 cents per minute thereafter.
CherryLover:
not sure if ya'll hear of this but last year there was this girl and her name is Aubreigh Wyatt and she was bullied by a group of people and they hated her
ctomk3743:
It's another song I had in mind (please no negative comments) I walk through the rain at night as the wind blows hard and the rain pours down on me.
5 hours ago
1 Reply
1 Medal
59 minutes ago
3 Replies
5 Medals
2 hours ago
6 Replies
3 Medals
5 hours ago
41 Replies
3 Medals
1 day ago
8 Replies
7 Medals