anonymous
  • anonymous
Use the quadratic formula to find the x-intercepts of the function. Round to the nearest tenth if necessary. y = -2x2 + 5x - 1 A. {2.3, 0.2} B. {2.2, -5.8} C. {-9.2, -0.8} D. no real solution
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
\[\frac{5\pm\sqrt{17}}{4}\]
anonymous
  • anonymous
best answer is A
anonymous
  • anonymous
Hmmm alright (: Thanks!!!

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anonymous
  • anonymous
Can you help me on like my last 6 questions?
anonymous
  • anonymous
i just computed first by quadratic formula, then plug in to calculator
anonymous
  • anonymous
ok shoot
anonymous
  • anonymous
pleaseeeeee? u dont have to.. but i would like it!
anonymous
  • anonymous
i am ready, lets do it.
anonymous
  • anonymous
Solve, using the square root method: 5x2 = 60. Round the solution to the nearest tenth. A. {3.5, -3.5} B. {7.7, -7.7} C. {3.5} D. No real solution
anonymous
  • anonymous
(: So generous!! :D
anonymous
  • anonymous
3.5, -3.5
anonymous
  • anonymous
5 to go
anonymous
  • anonymous
A?
anonymous
  • anonymous
A
anonymous
  • anonymous
Okay next one Solve using the square root method. Round to the nearest tenth if necessary. x2 + 15 =0 A. {3.9} B. {3.9, -3.9} C. {7.5, -7.5} D. no real solution
anonymous
  • anonymous
no real solution since \[x^2=-15\] has no real answer
anonymous
  • anonymous
4 to go
anonymous
  • anonymous
OKay so D Next one Which number completes the perfect square trinomial? x2 + 20x + ? A. 40 B. 100 C. 25 D. 80
anonymous
  • anonymous
100
anonymous
  • anonymous
(:
anonymous
  • anonymous
half of 20 is 10, 10 squared is 100
anonymous
  • anonymous
3 more
anonymous
  • anonymous
Okay (: Use the quadratic formula to solve the problem. A soccer player throws the ball onto the field from the sideline. An equation modeling the ball's flight is h = -16t2 + 18t + 2. In how many seconds will the ball reach the ground? A. in about 2 seconds B. in about 1.2 seconds C. in about 1.8 seconds D. Cannot be determined
anonymous
  • anonymous
set \[-16t^2+18t+2=0\] solve for t
anonymous
  • anonymous
B
anonymous
  • anonymous
about 1.2
anonymous
  • anonymous
Haha yea alright (: Thanks soooo much btw (: Next.. Which of the following shows the square completed in the this equation? x2 + 3x - 5 = 0 A. (x + 9)2 = 14 B. (x - 3)2 = 8 C. (x + 1.5)2 = 7.25
anonymous
  • anonymous
this is nonsense by the way unless he throws it straight up in the air. if he throws it out on the field equation makes no sense
anonymous
  • anonymous
C
anonymous
  • anonymous
Yea... thats true!!
anonymous
  • anonymous
one more?
anonymous
  • anonymous
2 more! here they are Solve the following using the quadratic formula. Round to the nearest tenth if necessary. 2x2 + 9x + 4 = 0 A. {-4, -0.5} B. {-16, -2} C. {-8, -1} D. no real solution Use the quadratic formula to find the zeros of the function y = 2x2 + 3x + 6. Round to the nearest tenth if necessary. A. {-1.7, 2.3} B. {-2.4, 2.4} C. {-2.3, 0.8} D. no real solution
anonymous
  • anonymous
ohh u dont have to do the last one then if u dont want to (:
anonymous
  • anonymous
i miscounted my bad! ^^
anonymous
  • anonymous
first one is A, -4 and -.5
anonymous
  • anonymous
no problem we do the last one now
anonymous
  • anonymous
Okay (:
anonymous
  • anonymous
ahww thanks!! =3
anonymous
  • anonymous
no solution
anonymous
  • anonymous
OKay (: OMFG i could seriously stalk you right now!!! (lmfao) I got another 100% I am totally getting it back to a B!!!! And its all thanks to youuuuuuuuu!!! <3
anonymous
  • anonymous
are you taking this on line?
anonymous
  • anonymous
Yep!! (; Haha
anonymous
  • anonymous
way to go!
anonymous
  • anonymous
Its hard as hell!!!
anonymous
  • anonymous
how can you miss? just ask and you get the answers.
anonymous
  • anonymous
and now i am done for the evening. gnight!
anonymous
  • anonymous
Ikr!! haha i usually get those ppl who only want metals :P And they give me wrong answerssss..... and okay thanks sooooooooooooooooooooo much!!!!!! (: Hope i see u again!! (:
anonymous
  • anonymous
ok maybe tomorrow.
anonymous
  • anonymous
very welcome.
anonymous
  • anonymous
(:
anonymous
  • anonymous
:)

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