Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + ... + 66

summation of negative forty five times n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to infinity

summation of negative forty five times n from n equals zero to infinity

Question

Mathematics

Taniyah Dyer

9 June, 14:18

Write the sum using summation notation, assuming the suggested pattern continues.

-9 - 4 + 1 + 6 + ... + 66

summation of negative forty five times n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to fifteen

summation of the quantity negative nine plus five n from n equals zero to infinity

summation of negative forty five times n from n equals zero to infinity

+1

Answers (1)

Know the Answer?

Johanna · Answer 1

It's the second choice

Step-by-step explanation:

Note that the numbers values increase by 5.

When n = 0, we have - 9 + 5 (0) = - 9

when n = 1 it is - 9 + 5 (1) = - 4

when n = 2 it is - 9 + 5 (2) = 1 and so on.

when n = 15 (the last term) 66 = - 9 + 5 (15).

We can write the summation as:

n=15

∑ (-9 + 5n)

n=0.