Answer:
it would be d
Step-by-step explanation:
Answer:
Find out the what is the eighth term in the arithmetic sequence defined by the explicit formula.
![a_{n} = 2n + 7](https://tex.z-dn.net/?f=a_%7Bn%7D%20%3D%202n%20%2B%207)
To prove
As given the explicit formula for the arithmetic sequence .
![a_{n} = 2n + 7](https://tex.z-dn.net/?f=a_%7Bn%7D%20%3D%202n%20%2B%207)
Put n = 8
![a_{8} = 2\times 8 + 7](https://tex.z-dn.net/?f=a_%7B8%7D%20%3D%202%5Ctimes%208%20%2B%207)
![a_{8} = 16 + 7](https://tex.z-dn.net/?f=a_%7B8%7D%20%3D%2016%20%2B%207)
![a_{8} = 23](https://tex.z-dn.net/?f=a_%7B8%7D%20%3D%2023)
Therefore the eighth term in the arithmetic sequence is 23 .
Answer:
y = 57
Step-by-step explanation:
y α x
y = kx ; k = Constant of proportionality
81 = k* 54
k = 81/54
k = 1.5
Value of y when x = 38
y = kx
y = 1.5 * 38
y = 57
Hence, y = 57 when x = 38
Answer:
Area = 30
Step-by-step explanation:
Add the two sides
8 + 4 = 12
Multiply that number by the height
12 × 5 = 60
Divide that number by 2
60 ÷ 2 = 30
Answer:
11.25 minutes possibly
Step-by-step explanation:
1.forget the 17 liters for now
2. divide 45 & 4
3. you should get 11.25