+0  
 
+1
154
8
avatar+2442 

Please help asap ty!

 Aug 21, 2018
 #1
avatar+2442 
0

Just need to know how to get the [_,_] slope (x intercepts) 

 Aug 21, 2018
 #2
avatar+196 
0

Graphing it helps a lot.

 Aug 21, 2018
 #3
avatar+2442 
+1

Ehh I guess. I'm thinking it would be this for the max. height: -120/2(-16) which equals 3.75 so it would be [0,3.75] and then I got the rest :P i'll show my work if anyone wants me to.

RainbowPanda  Aug 21, 2018
 #4
avatar+98090 
+2

h(t)  =  -16t^2  + 120t   +  6

The time  to reach the max height   =    -120  /[ 2 * -16 ]  = -120 / -32  = 3.75 sec

And....to find the max height, plug this value back into the function  =

-16(3.75)^2 + 120 (3.75)  +   6  =   231 ft

Note that the  change in height is [231 - 6 ]  = 225 ft

 

So...the average rate of change  in height  from intial height to max height   =   [231- 6] / 3.75  =

225 / 3.75  = 60 ft / sec

 

 

cool cool cool

 Aug 21, 2018
edited by CPhill  Aug 21, 2018
 #5
avatar+2442 
+1

That is exactly what I got tyvm! Proof: 

Ignore the other ones lol

RainbowPanda  Aug 21, 2018
 #6
avatar+98090 
+2

Well....two great minds couldn't possibly be incorrect, could they   ???

 

LOL!!!

 

 

cool cool cool

CPhill  Aug 21, 2018
 #7
avatar+2442 
+1

Well my mind isn't very great haha, but you're never incorrect, so this must be the correct answer. ^-^

RainbowPanda  Aug 21, 2018
 #8
avatar+98090 
+1

Oh....I'm  often incorrect....but....I try  NOT to be  !!!

 

cool cool cool

CPhill  Aug 21, 2018

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