anonymous
  • anonymous
How many solutions are there for the equation? x2 + 16 = 8x A. 2 B. 1 C. 0 I put B correct?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
yes
anonymous
  • anonymous
:P Are you just guessing Satellite? :P Ur answering rly fast.. lol
anonymous
  • anonymous
\[x^2-8x+16=(x-4)^2\]

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More answers

anonymous
  • anonymous
so only one answer: x=4
anonymous
  • anonymous
(: okay
anonymous
  • anonymous
what you think i made it up?
anonymous
  • anonymous
How many solutions are there for the equation? x2 + 9x = -7 A. 2 B. 1 C. 0 I put A. right? and idk lol this person gave me random answers before just to get medals... dont see the good in that but thats what they did! :P I believe you though (:
anonymous
  • anonymous
i think you are supposed to write \[x^2+9x+7=0\] and since this doesn't factor over the integers you have to compute \[9^2-4\times 1\times 7\] and see if it is positive, which it is, so you have two answers \
anonymous
  • anonymous
random answers is not good;(
anonymous
  • anonymous
Hmmm So then i got it right ... eh?
anonymous
  • anonymous
yes it is right. two anwers.
anonymous
  • anonymous
next?
anonymous
  • anonymous
(: haha woo hoo!! so far so good!!
anonymous
  • anonymous
A boy standing on a 64 foot cliff drops a coin off the cliff. If the equation of the height h of the coin t seconds after it drops is h = -16t2 + 64, about how many seconds will the coin take to reach the bottom of the cliff? A. 1 second B. 1.5 seconds C. 2 seconds D. 2.5 seconds i guessed on this one and i got B
anonymous
  • anonymous
\[-16t^2+64=0\] \[16t^2=64\] \[t^2=4\] \[t=2\]
anonymous
  • anonymous
no guessing.
anonymous
  • anonymous
^_^ haha okay. Thanks!! (: next one Solve the equation by graphing. x2 + 5x + 8 = 0 A. {-5, 8} B. {2, 4} C. {-4, 5} D. no solution I got D correct? (:
anonymous
  • anonymous
yes
anonymous
  • anonymous
sits above the x - axis. not zeros
anonymous
  • anonymous
(: Ivys kinda smart isnt she? lmao haha I guess i remembered more than i thought on this one :P
anonymous
  • anonymous
So far only one wrong!! ^^
anonymous
  • anonymous
good. just guessing or doing any work?
anonymous
  • anonymous
Last one!! Solve the equation by graphing. x2 - 18x + 81 = 0 A. {-2, 9} B. {9/2, 3} C. {9} D. no solution I got C.. am i right? And i have been doing work (:
anonymous
  • anonymous
\[x^2-18x+81=(x-9)^2\]
anonymous
  • anonymous
answer is 9
anonymous
  • anonymous
Woooo!!!!! :D turns out doing the work works mucho bettah
anonymous
  • anonymous
is there more or is that all?
anonymous
  • anonymous
yeah go figure nothing like actually computing!
anonymous
  • anonymous
Nope. I turned it in and i got 100% i could kiss you!! lol I love this cite!!
anonymous
  • anonymous
done! now forget math and do something else.
anonymous
  • anonymous
congrats
anonymous
  • anonymous
Haha i cant :P
anonymous
  • anonymous
why?
anonymous
  • anonymous
Too much work to do. Too little time.
anonymous
  • anonymous
lol
anonymous
  • anonymous
lol!
anonymous
  • anonymous
ok i will do something else. have fun
anonymous
  • anonymous
I HAVE to get my grade up to B i HAVE to!!!!!!!!! I about ready to pull out my hair!!! All i know is i AM getting that grade up before i take the exam!!!!!!!! AHHHH!! lol

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