Question

How many solutions are there for the equation? x2 + 16 = 8x

A. 2
B. 1
C. 0

I put B correct?

Answer 1

yes

Answer 2

:P Are you just guessing Satellite? :P Ur answering rly fast.. lol

Answer 3

\[x^2-8x+16=(x-4)^2\]

Answer 4

so only one answer: x=4

Answer 5

(: okay

Answer 6

what you think i made it up?

Answer 7

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 (:

Answer 8

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
\

Answer 9

random answers is not good;(

Answer 10

Hmmm So then i got it right ... eh?

Answer 11

yes it is right. two anwers.

Answer 12

next?

Answer 13

(: haha woo hoo!! so far so good!!

Answer 14

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

Answer 15

\[-16t^2+64=0\]
\[16t^2=64\]
\[t^2=4\]
\[t=2\]

Answer 16

no guessing.

Answer 17

^_^ 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? (:

Answer 18

yes

Answer 19

sits above the x - axis. not zeros

Answer 20

(: Ivys kinda smart isnt she? lmao haha I guess i remembered more than i thought on this one :P

Answer 21

So far only one wrong!! ^^

Answer 22

good. just guessing or doing any work?

Answer 23

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 (:

Answer 24

\[x^2-18x+81=(x-9)^2\]

Answer 25

answer is 9

Answer 26

Woooo!!!!! :D turns out doing the work works mucho bettah

Answer 27

is there more or is that all?

Answer 28

yeah go figure nothing like actually computing!

Answer 29

Nope. I turned it in and i got 100% i could kiss you!! lol I love this cite!!

Answer 30

done! now forget math and do something else.

Answer 31

congrats

Answer 32

Haha i cant :P

Answer 33

why?

Answer 34

Too much work to do. Too little time.

Answer 35

lol

Answer 36

lol!

Answer 37

ok i will do something else. have fun

Answer 38

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