When you think of an electronic log book for workplaces they are like this. human to machine- The human is speaking to the machine through actions of logging in times etc. Machine to human- The machine will now send a response to the human saying that it is logged. Machine to Machine- The machine will use its software to dispose or disclose the information you have given it.
The eqution of height y in terms of the time x is
![y=-16x^2+116x+7.](https://tex.z-dn.net/?f=y%3D-16x%5E2%2B116x%2B7.)
We are asked when the rocket will strike the ground, so that is the same that sayin when will the rocket's height will be zero again, that is, y=0. so we have to solve
![-16x^2+116x+7=0.](https://tex.z-dn.net/?f=-16x%5E2%2B116x%2B7%3D0.)
the solutions of this equations are
![x=\frac{-116\pm\sqrt[]{116^2-4(-16)(7)}}{2(-16)}=\mleft\{\begin{aligned}-0.05 \\ 7.3\end{aligned}\mright.](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-116%5Cpm%5Csqrt%5B%5D%7B116%5E2-4%28-16%29%287%29%7D%7D%7B2%28-16%29%7D%3D%5Cmleft%5C%7B%5Cbegin%7Baligned%7D-0.05%20%5C%5C%207.3%5Cend%7Baligned%7D%5Cmright.)
So, the rocket will strike the ground after 7.3 seconds
4.5 * 1.68 = 7.5600
hope this helps:)
Answer: 7i
explanation: √-1 is i because a negative square root is imaginary. you can take out the negative from the inside of the square root and replace it with i on the outside. that leaves you with √49, which is 7, and that gives you 7i
Answer:
U=76 and R=42 so they are not
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