A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
jit4wonsolve each equation by completing the square. round to the nearest hundredth if necessary.
3. x^2+6x =16
4. x^210x =11
5. x^29x =0
6. x^2+16x =15
7. 3x^2+18x81=0
use the quadratic formula to solve each equation. round to the nearest hundredth if necessary.
8. 4x^2+3x8=0
9.2x^27x+3=0
10. x^22x+3=0
11. 2x^2+4x7=0
I DONT GET THIS STUFF.
anonymous
 4 years ago
jit4wonsolve each equation by completing the square. round to the nearest hundredth if necessary. 3. x^2+6x =16 4. x^210x =11 5. x^29x =0 6. x^2+16x =15 7. 3x^2+18x81=0 use the quadratic formula to solve each equation. round to the nearest hundredth if necessary. 8. 4x^2+3x8=0 9.2x^27x+3=0 10. x^22x+3=0 11. 2x^2+4x7=0 I DONT GET THIS STUFF.

This Question is Closed

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so for quadratic stuff.. Use this formula..\[b \pm \sqrt{b ^{2}4ac}/2a\] like for question 8: a=4; b=3; c=8 < plug these number in the equation and solve..

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i knew i was missing a formula lol. thanks.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0lol kk welcome.. for completing the sq.. http://www.purplemath.com/modules/sqrquad.htm

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0for ur question 3. \[x ^{2}+6x=16\] \[x ^{2}+6x+9\] is a complete sq. so u take 3 inside the brackets and take +9 to the other side.. like, \[(x+3)^{2}=16+9\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[(x+3)^{2}=25\] < take the sq. root on both sides.. \[\sqrt{(x+3)^{2}}=\sqrt{5^{2}}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0are these the answers?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0x=53 ; x=53 x=2 ; x=8 No this is answer to question 3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0can you do the rest lol?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0try doing it, if you get stuck i will help u..

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i tried and im stuck. and i have to turn these problems in in 20 mins and its a test.

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0X^26X=20 its saying round to the nearest hundredth can someone help me please
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.