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anonymous
 4 years ago
im lost ... −16t2+80x−60=0
Solving for t,
t=(5±10−−√)2
anonymous
 4 years ago
im lost ... −16t2+80x−60=0 Solving for t, t=(5±10−−√)2

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0why do you have mixed variables __

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0well simplify the problem 4(4t^2  20t +15)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Ah this is the a nswer i gave you earlier for the height?

campbell_st
 4 years ago
Best ResponseYou've already chosen the best response.0so using the GQF \[t = (20\pm \sqrt{(20)^24\times4\times15})/(2 \times4)\] \[t = (20 \pm \sqrt{16 \times10})/8 = (5\pm \sqrt{10})/2\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0umm yeah im already there

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Screw it the equation th ing is broken

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Use the quadratic formula to s olve for t

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t=\frac{b \pm \sqrt{b^24ac}}{2a}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I dont think ive learned that yet

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Is this a physics problem or calculus?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You should've learned the quadratic formula back in algebra

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so i would just plug in the numbers that were found in the early part of the question?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[ax^2+bx+c=0\], you can only use the quadratic formula when you have your equation like this

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0in this case you do, and you can also divide out a 4 from all the terms 16,80, and 60

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[4t^2+20x15=0\] a=4 b=20 c=15

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok? so now I can solve by getting

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0no, use the quadratic formula as it is written above right now, \[t=\frac{b \pm \sqrt{b^24ac}}{2a}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t=\frac{20 \pm \sqrt{20^24(4)(15)}}{2(4)}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t=\frac{20 \pm \sqrt{160}}{8}=\frac{20 \pm 4\sqrt{10}}{8}=\frac{5 \pm \sqrt{10}}{2}=\frac{5 \pm \sqrt{10}}{2}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Remember to keep the positive and negative signs for a,b,c

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so now I have 3.16227766/2 = 1.58113883

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t \approx .9189s, t \approx 4.081s\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0can you give me the all the numbers shown on your calculator

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0They are irrational numbers, there are infinitely many decimal places

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Use the answer with the square root

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0no just the numbers shown on your calculator bcause I need the precise number

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You can't get a precise number from an irrational number! Use \[t=\frac{5 \pm \sqrt{10}}{2} s\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That is the precise answer, any decimal answer is an approximation

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0what I mean is when plug the answers into the my computer it needs the closets thing to an approximate number

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so it must have the all the numbers shown from the calculator for it to be correct

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Your calculator can show hundreds of digits if you want it to

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0How many decimal places do you need?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t \approx 0.918861169916s, t \approx 4.08113883008s\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0like im using a standard calcultor so it only shows like 9 or 10 numbers

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0here are my instructions : For example, the fraction 2/3 is exact, while the decimals 0.67, 0.666666667 and 0.666666666666666666667 are all approximate values for 2/3. Where an exact answer is called for, an approximate answer will be marked wrong.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So if you use a decimal here, you will be wrong

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Use the answer i gave you with the square root

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so like t t= .9189 just sqrt it

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[t=\frac{5+\sqrt{10}}{2}, t=\frac{5\sqrt{10}}{2}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Those are the exact answers for the time

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok got it , thanks sorry for the confusion !!
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