9. If a1 = 24, d= 6, n = 11, What is its arithmetic series?
a. 2422
b. 4824
c. 594
d. 1202
10. How many terms if the given are a1 = 25, d = 7, Sn = 1110?
a. 17
b. 16
c. 15
d. 19
a. 2422
b. 4824
c. 594
d. 1202
10. How many terms if the given are a1 = 25, d = 7, Sn = 1110?
a. 17
b. 16
c. 15
d. 19
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»ANSWER:
9. If a1 = 24, d= 6, n = 11, What is its arithmetic series?
a. 2422
b. 4824
c. 594
d. 1202
10. How many terms if the given are a1 = 25, d = 7, Sn = 1110?
a. 17
b. 16
c. 15
d. 19
Answer:
9. If a1 = 24, d= 6, n = 11, The arithmetic series is
c. 594
Step-by-step explanation:
Sn = n/2 ( 2A₁ +(n-1)d)
S₁₁ = 11/2 (2(24)+(11-1)(6)
S₁₁ = 594
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