Answer:
![66.05](https://tex.z-dn.net/?f=66.05)
Step-by-step explanation:
Cost of meal = ![64.75](https://tex.z-dn.net/?f=64.75)
Cost of meal after discount of ![15\%](https://tex.z-dn.net/?f=15%5C%25)
![64.75-64.75\times 0.15](https://tex.z-dn.net/?f=64.75-64.75%5Ctimes%200.15)
![=64.75(1-0.15)](https://tex.z-dn.net/?f=%3D64.75%281-0.15%29)
![=55.0375](https://tex.z-dn.net/?f=%3D55.0375)
Cost of the meal after tip of ![20\%](https://tex.z-dn.net/?f=20%5C%25)
![55.0375\times (1+0.2)](https://tex.z-dn.net/?f=55.0375%5Ctimes%20%281%2B0.2%29)
![=66.045\approx 66.05](https://tex.z-dn.net/?f=%3D66.045%5Capprox%2066.05)
The total cost of the meal was
.
Answer:
<em>sin (A) = 8/17</em>
Step-by-step explanation:
Sine = opposite/hypotenuse
Sin (A) = 16/34
Sin (A) = 8/17
bearing in mind that the derivative of s(t) is s'(t) = velocity, thus
![\bf s(t)=-2-6t\implies \left. \cfrac{ds}{dt}=-6 \right|_{t=2}\implies -6](https://tex.z-dn.net/?f=%5Cbf%20s%28t%29%3D-2-6t%5Cimplies%20%5Cleft.%20%5Ccfrac%7Bds%7D%7Bdt%7D%3D-6%20%5Cright%7C_%7Bt%3D2%7D%5Cimplies%20-6)
namely a negative rate, so the object is slowing down to a stop.