Answer:
15
Step-by-step explanation:
Using the formular, Sn = n/2(2a + (n - 1)d)
where, n = 6: Sn = 6/2( -20 + 5(3)) = 3(15 - 20)
∴ Sn = 15
Answer:
7
9
Step-by-step explanation:
key is the number of letters in each word
It’s C mate! Hope this helps! :))
Answer: A.8.7
Step-by-step explanation:
C = what ever the algebraic pharse is standing for c can equal to what ever number there is