Ask
your own question, for FREE!
Mathematics
61 Online
OpenStudy (anonymous):
find points of intersection. x^2 + y^2 = 25, 2x + y =10
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
x=3 y=4
OpenStudy (anonymous):
dont care. i dont know how
myininaya (myininaya):
\[x^2+y^2=25, y=10-2x\] \[x^2+(10-2x)^2=25\]
OpenStudy (anonymous):
and it = (5,0) too
OpenStudy (anonymous):
Well its basically from the equation, a^2+b^2=c^2. I remembered my special 3,4,5 Triangle and got the answer.
Still Need Help?
Join the QuestionCove community and study together with friends!
myininaya (myininaya):
\[x^2+10^2-2(10)(2x)+(2x)^2=25\] \[x^2+100-40x+4x^2-25=0\] \[5x^2-40x+75=0\]
myininaya (myininaya):
\[x^2-8x+15=0\]
myininaya (myininaya):
\[(x-5)(x-3)=0=>x=5 or x=3\]
myininaya (myininaya):
\[y=10-2x=> y=10-2(5)=10-10=0 or y=10-2(3)=10-6=4\]
myininaya (myininaya):
so we have the ordered pairs where the curves/lines intersect are (5,0) or (3,4)
Still Need Help?
Join the QuestionCove community and study together with friends!
myininaya (myininaya):
abe gj on that thinking
myininaya (myininaya):
i like that
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
notmeta:
I need ideas for a fictional business :P (has to be a sole proprietorship)
3 hours ago
1 Reply
2 Medals
0bviouslyNotRakita:
Letu2019s say you want to go to XYZ Medical School as itu2019s located in Corpus Christi, TX and youu2019d love to live on the beach while attending medical
8 hours ago
0 Replies
0 Medals
Angie2009:
Can anyone here help me learn Korean? My brothers want me to move back to Korea b
8 hours ago
3 Replies
0 Medals
Subshilava:
Which of the following is the real root and which is the non real root X=2+-i X=4
8 hours ago
4 Replies
1 Medal
Alanaaaaaaa:
Shattered Whispers In the dim light where shadows creep, She stood, a specter in my dreams, Eyes like burning coals, secrets to keep, Her laughter danced on
3 hours ago
35 Replies
2 Medals