Answer:
y = 3x + 4
Step-by-step explanation:
(x + 7y )*(x-11y) is what goggle says on 5 sites
Answer:
they arnt whole it would have to be a decimal and you would have to round in order for it to be a whole number
Step-by-step explanation:
ANSWER
D. 224
EXPLANATION
The given series is
![\sum_{n=1}^{14}(2n+1)](https://tex.z-dn.net/?f=%5Csum_%7Bn%3D1%7D%5E%7B14%7D%282n%2B1%29)
The first term of this series is
![a_1=2(1) + 1 = 3](https://tex.z-dn.net/?f=a_1%3D2%281%29%20%2B%201%20%3D%203)
The last term of this series is:
![l = 2(14) + 1 = 29](https://tex.z-dn.net/?f=l%20%3D%202%2814%29%20%2B%201%20%3D%2029)
The sum of the first n-terms of the series is calculated using the formula,
![S_n= \frac{n}{2} (a + l)](https://tex.z-dn.net/?f=S_n%3D%20%5Cfrac%7Bn%7D%7B2%7D%20%28a%20%2B%20l%29)
![S_ {14}= \frac{14}{2} (3+ 29)](https://tex.z-dn.net/?f=S_%20%7B14%7D%3D%20%5Cfrac%7B14%7D%7B2%7D%20%283%2B%2029%29)
![S_ {14}= 7 \times (32)](https://tex.z-dn.net/?f=S_%20%7B14%7D%3D%207%20%5Ctimes%20%20%2832%29)
![S_ {14}= 224](https://tex.z-dn.net/?f=S_%20%7B14%7D%3D%20224)