Using the quadratic formula, we solve for
.

Taking square roots on both sides, we end up with

Compute the square roots of -171 + 140i.


By de Moivre's theorem,

and the other root is its negative, -5 - 14i. We use the fact that (140, 171, 221) is a Pythagorean triple to quickly find

as well as the fact that


(whose signs are positive because of the domain of
).
This leaves us with

Compute the square roots of 5 + 12i.


By de Moivre,

and its negative, -3 - 2i. We use similar reasoning as before:




Lastly, compute the roots of -2i.



as well as -1 + i.
So our simplified solutions to the quartic are

6x I believe so have a. Nice day bby
3.866 microseconds? 7 x 522 nano seconds = 3.86600 ms
Answer:
Step-by-step explanation:
so the question is asking about the time from 1500 feet to 1100 feet. How long did they fall, w/o a parachute. aka "freefall" so, at 1500 feet the jumper is really at time zero. so, plug in to the formula
1100 = -16
+1500
( x represents seconds so i'll change it to t so we know it's time )
1100 = -16
+ 1500
now we can solve for t , to see how long the jumper falls
-400 = - 16
( subtracting 1500 from both sides of equation )
25 =
( dividing both sides by -16 )
oh.. look at how nice that turns out.. :)
= t ( take the square root on both sides )
5 = t
the jumper fell for 5 seconds to get to 1100 feet
Answer: absolute value
Step-by-step explanation:
Sorry for my writing it’s horrible ik I’m in a hurry rn lol