Question

Solve for x. -16x^2+64x+363=0

Answer 1

use the quadratic formula
a is -16 b is 64 and c is 363

Answer 2

I DID. UGh

Answer 3

what did you get?

Answer 4

like a big number that wouldnt be right because i cant use decimas and it would have been

Answer 5

\[x=(-64\pm \sqrt{27328})/-32\]

Answer 6

You will get a decimal solution and you can verify it using a graphing calculator

Answer 7

make sure you wrote the problem correctly. If you did you have the formula set up right, so who care if the number is big, it's the answer.

Answer 8

GAH i have been working on this for four hours or more

Answer 9

Do you know what the answer is supposed to be?

Answer 10

Yes, calculus is a pain. Looks like you are were on a particle motion problem.
Hang in there. We are here to help you.

Answer 11

thanks guys

Answer 12

i posted two recent questions. they are my last ones lol and its driving me crazy.

Answer 13

If it is a partical motion problem then this is not the original you were given, right? maybe you made a mistake earlier in the derivation of your quadratic.

Answer 14

bleh

Answer 15

x = 6.019 & -3.769 from the quadratic equation. What

Answer 16

What are you supposed to get?

Answer 17

How many seconds does it take until the ball finally hits the ground? Round to the nearest tenth of a second.

Answer 18

Well since seconds can not be negative I would think 6.0

Answer 19

for f(x)=-16t^2+64t+363

Answer 20

6 seconds is your answer rounded up to the nearest tenth.

Answer 21

it says no

Answer 22

no its not

Answer 23

The quadratic formula shows that the two answers are 6.019 and 3.769 by the equation you wrote down. Now if there is a mistake anywhere else I couldn't help you.

Answer 24

My gosh, I can't divided, it's 7.17 or -3.17, so nearest tenth would be 7.2

Answer 25

I actually got 7 I was about to post

Answer 26

so try 7 sec

Answer 27

either way i dont know. its a chain question and like i dont know which one is wrong until all are right

Answer 28

7.2 I mean

Answer 29

well the answer to the question you posted is 7.2 sec
what more can we do?

Answer 30

;) I just wish I could divide correctly. haha

Answer 31

this is one of my questions. could one of u be so kind to just answer every one. I cant tell til im done which is right and i have been doing this for HOURS

Answer 32

All are correct except for the last
s(0) represents the initial height of the ball

Answer 33

^Agreed

Answer 34

wow im an idiot. lol i love u guys thanks so much.

Answer 35

i have one more :( wanna help ? lol u dont have to

Answer 36

ima post it on the question feed so u can get medals

Answer 37

post it separately and we'll see

Answer 38

okay