Respuesta :

Answer:

363

Step-by-step explanation:

if you find the multiples of 1.5 which is

1.5

3

4.5

6

7.5

9

10.5

12

13.5

15

16.5

18

19.5

21

22.5

24

25.5

27

28.5

30

you add these all together you would get 363

nonsibi

This is a arithmetic sequence with an equation of...

a(n) = 1.5 - 0.05(n-1) with a first term of 1.5 and a common difference of -0.05

Input this into the calculator to find the sum of the first twenty terms.

20

∑ 1.5-0.05(n-1)

n=1

You will get 20.5.

answer: 20.5