19: He multiplied instead of dividing which will make a totally incorrect answer
First, we are going to find the common ratio of our geometric sequence using the formula:

. For our sequence, we can infer that

and

. So lets replace those values in our formula:


Now that we have the common ratio, lets find the explicit formula of our sequence. To do that we are going to use the formula:

. We know that

; we also know for our previous calculation that

. So lets replace those values in our formula:

Finally, to find the 9th therm in our sequence, we just need to replace

with 9 in our explicit formula:



We can conclude that the 9th term in our geometric sequence is <span>
1,562,500</span>
Answer:
17
Step-by-step explanation:
this is the answer.
.....................................................................................
Answer:
The answer is a quadratic equation
Answer:
- 16/5
Step-by-step explanation:
We have point with coordinates (-6, y) which lies ( or belong) on the graph of the straight line 5y=2x-4
When we replace x= -6 in given equation we get 5y = 2·(-6)-4 => 5y= -12-4 =>
5y= - 16 => y= - 16/5
Good luck!!!