Step-by-step explanation:
The car travels 600 feet in 20 seconds
=> 30 feet per second
The moyorcycle travels 300 feet in 12 seconds
=> 25 feet per second
Since 30 > 25, the car travels faster than the motorcycle.
Answer:
The sum of the series is 749
Step-by-step explanation:
Given
![a_1 = 8](https://tex.z-dn.net/?f=a_1%20%3D%208)
![a_{14} = 99](https://tex.z-dn.net/?f=a_%7B14%7D%20%3D%2099)
![n = 14](https://tex.z-dn.net/?f=n%20%3D%2014)
Required
The sum of the series
This is calculated using:
![S_n = \frac{n}{2}[a_1 + a_n]](https://tex.z-dn.net/?f=S_n%20%3D%20%5Cfrac%7Bn%7D%7B2%7D%5Ba_1%20%2B%20a_n%5D)
Substitute 14 for n
![S_{14} = \frac{14}{2}[a_1 + a_{14}]](https://tex.z-dn.net/?f=S_%7B14%7D%20%3D%20%5Cfrac%7B14%7D%7B2%7D%5Ba_1%20%2B%20a_%7B14%7D%5D)
![S_{14} = 7[a_1 + a_{14}]](https://tex.z-dn.net/?f=S_%7B14%7D%20%3D%207%5Ba_1%20%2B%20a_%7B14%7D%5D)
Substitute values for a1 and a14
![S_{14} = 7[8 + 99]](https://tex.z-dn.net/?f=S_%7B14%7D%20%3D%207%5B8%20%2B%2099%5D)
![S_{14} = 7*107](https://tex.z-dn.net/?f=S_%7B14%7D%20%3D%207%2A107)
![S_{14} = 749](https://tex.z-dn.net/?f=S_%7B14%7D%20%3D%20749)
Answer:
-9
Step-by-step explanation:
9=b-2b
9=-b
divide both sides by -
b=-9
Answer:
8.12 is the rounded answer. So whatever point is closest to that.
Step-by-step explanation:
Answer:
80.5
Step-by-step explanation: