Question

Write the sum using summation notation, assuming the suggested pattern continues.1 - 3 + 9 - 27 + .

Answer 1

are you looking for what comes after - 27 or the rule that is applying to the pattern here, mate?

Answer 2

i am not really sure

Answer 3

well if you look at the pattern going from -3 to 9, what happened?

Answer 4

and then from 9 to -27 what happened?

Answer 5

is it by 3

Answer 6

actually i wil just ask my teacher its find thank you

Answer 7

yes, the number multiplies by three and the sign changes, so -3 x 3 = -9 reverse is just 9 then 9 x 3 is 27 reverse is just -27 if that rule goes continuously, what is the next number?

Answer 8

your next number will be 81

Answer 9

if you don't know wether to find the rule, or add the number after make a input output table and you will solve both of them, therefore your answer cannot be wrong, and you will probably get extra credit! hope this helped.