U is 10. If you subtract 11 first to get the variable and it's coefficient on its own, you see that 3u=30. To get the u on its own, you divide both sides by three. This gives you u=10
Answer:
6.4
Step-by-step explanation:
To find the distance you have to do this formula.

6.4 is the answer rounded to the nearest tenth.
Hope this helps!!
X={6,-10} that is the answer
Answer:
The common ratio is 4
Step-by-step explanation:
We need to divide a term by the previous term to find the common ratio in a geometric sequence:
64 ÷ 16 = 4
256 ÷ 64 = 4
By doing it twice we can confirm that the common ratio is 4