The formula for the sum of n terms in an arithmetic progression is:
S = n/2 * (2a + (n-1)d)
Here, the common difference, d, is 8 and the first term, a, is 1. Substituting these into the formula, we get:
S = n/2 * (2*1 + 8(n - 1))
S = n + 4n² - 4n
S = 4n² - 3n
The answer is A.
Answer:
C because its the only one that fits the question its asking. 12-6 8-4 4-2
Step-by-step explanation:
For the answer to the question above asking <span>What additional information would you need to prove that ΔABC ≅ ΔDEF by SSS?
The answer to your question is </span><span>AB = DE & BC = EF, so the only sides missing are AC = DF, </span>
<span>so Side AC is congruent to side DF is the answer.
I hope my answer helped you. Have a nice day!
</span>
Answer:
6
10
3
57
10
Step-by-step explanation:
just divide and find x:1
