36
List the numbers
31,34,34,35,37,38,38,39
Mark out one from each side till you get 37 and 35 average them to get your answer
1/8 of 240= 1/8 x 240. So 1/8 of 240 is 30.
Answer:
- 340
Step-by-step explanation:
The sum to n terms of an AP is
= ( a + l ) → a is the first term and l the last term
Here a = - 76 and = - 9360 , thus
( - 76 + l ) = - 9360
22.5(- 76 + l) = - 9360 ( divide both sides by 22.5 )
- 76 + l = - 416 ( add 76 to both sides )
l = - 340 ← the last term in the sequence
Maybe this...?
3(3) + 2(8)