Answer:
56.7 mi/h
Step-by-step explanation:
The formula for average speed is:
Average Speed = ![\frac{TotalDistance}{TotalTime}](https://tex.z-dn.net/?f=%5Cfrac%7BTotalDistance%7D%7BTotalTime%7D)
Thus we have:
Average Speed =
mph
<em>Rounding to the nearest tenth, we have </em>
Average Speed = 56.7 mi/h
Answer:
false a = -3
Step-by-step explanation:
7v^2 + 2v^3 -7v - (5v^3 -4v^2 +10v)
7v^2 + 2v^3 -7v - 5v^3 +4v^2 -10v
-3v^3 + 11v^2 -17v
Answer: Option A.
Step-by-step explanation:
Based on the information given in the problem, you can draw the figure shown attached.
The area of rectangle can be calculated with the following formula:
![A=l*w](https://tex.z-dn.net/?f=A%3Dl%2Aw)
Where <em>l</em> is the length and <em>w</em> is the width.
As you can see in the figure:
- The width is: ![x+4](https://tex.z-dn.net/?f=x%2B4)
-The length is: ![3(x+4)=3x+12](https://tex.z-dn.net/?f=3%28x%2B4%29%3D3x%2B12)
Therefore, you must multiply both expressions to obtain the area:
![(x+4)(3x+12)=3x^2+12x+12x+48](https://tex.z-dn.net/?f=%28x%2B4%29%283x%2B12%29%3D3x%5E2%2B12x%2B12x%2B48)
Add like terms:
![3x^2+24x+48](https://tex.z-dn.net/?f=3x%5E2%2B24x%2B48)
Then, the function that represents the area of the cake is:
![c(x)=3x^2+24x+48](https://tex.z-dn.net/?f=c%28x%29%3D3x%5E2%2B24x%2B48)
Answer:
Step-by-step explanation:
4 = 2
It would take 4 months to have the same amount of money and both of them will $120.