Given:
1,5,25,61.....
To find:
The following number.
Solution:
We can see a pattern in the given sequence.




Using this pattern the next term is the sum of squares of 7 and 8.

Therefore, the next number is 113.
Answer:
9
Step-by-step explanation:
21^2-19^2=80
sqaure root of 80 to the nearest 10th is
Answer: x= -11
Step-by-step explanation: Substitute y for -9, and move 2 to the other side, which would be -9-2=-11. So x=-11
The answer is 21.
18 classrooms x 35 students in each classroom = 630 total students
630 total students / 30 students in each classroom = 21
Divide by 3 because it goes from 36 to 12 which is divided by 3 then 12 divided by 3 is 4