anonymous
  • anonymous
--->>>Problem #8
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
Why is the answer not 14?
anonymous
  • anonymous
i did 142-2/10-0 = 140/10 = 14

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More answers

EarthCitizen
  • EarthCitizen
\[f(t)=t ^{2}+4t+2 \therefore f(t)\prime=2t+4\]
anonymous
  • anonymous
???
EarthCitizen
  • EarthCitizen
you differentiate f(t)
anonymous
  • anonymous
o wait
anonymous
  • anonymous
i plugged in 10 but i wasnt supposed to, right?
EarthCitizen
  • EarthCitizen
yep
anonymous
  • anonymous
just 0 and t
EarthCitizen
  • EarthCitizen
no, find the zeroes of the first function f(t) leaving you with \[t=-2-\sqrt(2) , \sqrt(2)-2\]
anonymous
  • anonymous
im kinda confused
anonymous
  • anonymous
can you show work please
EarthCitizen
  • EarthCitizen
\[2t+4=10 \therefore t=3\] i think
anonymous
  • anonymous
im getting even more confused... i dont think we've covered what you are doing in my class yet
EarthCitizen
  • EarthCitizen
have you done differentiation ?
anonymous
  • anonymous
dont think so? if we have, i must've been day dreaming or something
EarthCitizen
  • EarthCitizen
ouch! not a good thing to solve calculus if you haven't done it before you'll just be hurting your mind
anonymous
  • anonymous
the answers not 3 btw
EarthCitizen
  • EarthCitizen
yh, what was it ?
anonymous
  • anonymous
idk yet, you tell me lol
EarthCitizen
  • EarthCitizen
what are the options then ?
anonymous
  • anonymous
no options
anonymous
  • anonymous
it just tells you if you got it right or wrong
EarthCitizen
  • EarthCitizen
shoot!
anonymous
  • anonymous
at least i get unlimited tries lol
EarthCitizen
  • EarthCitizen
since y=mx+c then f(t)'=2t+4
anonymous
  • anonymous
its 6
anonymous
  • anonymous
the answer is 6
anonymous
  • anonymous
i do just plug in 0 and t and then do rate of change
EarthCitizen
  • EarthCitizen
alryt, show me wh@ you did ?
EarthCitizen
  • EarthCitizen
we are all learning
anonymous
  • anonymous
f(0)^2+4(0)+2=2 f(t)=t^2+4t+2 t^2+4t+2-(2)/t =t+4 t=6 because 6+4 is 10 (10 is given in the problem)
EarthCitizen
  • EarthCitizen
alryt, i see. why did you divide thru by t ?
anonymous
  • anonymous
its usually by h but since there is no h i made it a t (im using the difference quotient formula or whatever its called)
EarthCitizen
  • EarthCitizen
alryt, so you haven't done calculus before ?
anonymous
  • anonymous
first time
EarthCitizen
  • EarthCitizen
awesome!
anonymous
  • anonymous
why is that? lol
EarthCitizen
  • EarthCitizen
yh, coz you haven't done calculus yet and you did a calculus problem, so th@s awesome
anonymous
  • anonymous
lol
anonymous
  • anonymous
i posted another question that you could maybe help me with
EarthCitizen
  • EarthCitizen
alryt, i'll try wish me luck

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