Answer:
225
Step-by-step explanation:
Using the basic components of summation ∑
∑n =
n(n + 1) and ∑1 = n
Thus
∑ (2n - 1) ← for n = 1 to 15
= ∑2n - ∑1
= 2∑n - ∑1
= 2 (
n(n + 1)) - n
= n(n + 1) - n ← Evaluate for n = 15 ( the upper value )
= 15 × 16 - 15
= 240 - 15
= 225
Answer:
0.725, 7/25, 7.5%
Step-by-step explanation:
Hope this helps! Have a great day ahead <3
Answer:
B. 0.86
Step-by-step explanation:
I calculated it logically
Answer:
1. 5/3
2. A
Step-by-step explanation: