Answer:
a7 = 38
Step-by-step explanation:
n is the term indicator
an = 5n+3
Let n=7 if we are looking for the 7th term
a7 = 5*7 +3
a7 = 35+3
a7 = 38
<u>EXPLANATION</u>
The reason is that

If we multiply
by its conjugate
We obtain;
This is difference of two squares so we obtain;
This further gives us,
Since the
, we substite to get;
The
is now eliminated and we get,
Every cross-section of a sphere will be a circle.
Answer: circle
Any further questions about this? Or how I got my answer?
To find speed, divide total distance by total time:
Speed = 19.2 / 3 = 6.4 kilometers per hour