Beginning with the 20, the set of rules to get the next 3 terms is:
Add 3 . . . . . 23
Add 5 . . . . . 28
Take half. . . 14
Add 3 . . . . . 17
Add 5 . . . . . 22
Take half. . . 11
Next comes:
Add 3 . . . . . 14
Add 5 . . . . . 19
20,23,28,14,17,22,11,
16
14 * 11 = 154 square feet!
The two numbers are 11 and 14. 11 + 14 = 25, 142 - 112 = 75
Average = (7 + 14 + 12) / 3Average = 33 / 3 = 11
Let the length of a leg be x. There are three sides: the base which is 11, and the legs, which are both x: 11 + x + x = 39 2x+11 = 39 2x = 39-11 2x = 28 x = 28/2 x = 14 The length of one leg is 14 units.
11/14
14
14
24
30!
The number 7 comes next.
11
6
6
6
The next number is 2.
11
Since each number is one less than the one before it, the next number would be 8.