Answer:
![\text{\bf{C.}}\quad a_n=4+(n-1)(-7)](https://tex.z-dn.net/?f=%5Ctext%7B%5Cbf%7BC.%7D%7D%5Cquad%20a_n%3D4%2B%28n-1%29%28-7%29)
Step-by-step explanation:
An arithmetic sequence that is described by the explicit formula ...
![a_n=a_1+(n-1)d](https://tex.z-dn.net/?f=a_n%3Da_1%2B%28n-1%29d)
can also be described by the recursive formula ...
![\left \{\begin{array}{l}a_1=\text{(first term)}&a_n=a_{n-1}+d&\end{array}\right.](https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%5Cbegin%7Barray%7D%7Bl%7Da_1%3D%5Ctext%7B%28first%20term%29%7D%26a_n%3Da_%7Bn-1%7D%2Bd%26%5Cend%7Barray%7D%5Cright.)
Matching parts of the formulas, we see that a1 = 4, d = -7. Putting these values into the explicit formula gives ...
![a_n=4+(n-1)(-7)](https://tex.z-dn.net/?f=a_n%3D4%2B%28n-1%29%28-7%29)
Answer:
Sounds like a very serious problem, hope it gets fix soon!
Answer:
if it didnt have any stops or breaks it would be about 180 km
Step-by-step explanation:
Answer:
x<10
Step-by-step explanation:
2x-8<12
add 8 to 12 and cancel to get the equation, 2x<20
divide 20 by 2
x<10
Hope this helps :)
15*19=285
base times height is the formula