Answer:
Sum of the sequence (Sn) = 33,859
Step-by-step explanation:
Given:
Sequence = 685+678+671+664+...+6
Find:
Sum of the sequence (Sn)
Computation:
a = 685
d = 678 - 985 = -7
an = 6
an = a+(n-1)d
6 = 685+(n-1)(-7)
-679 = (n-1)(-7)
97 = n-1
n = 98
So,
Sum of the sequence (Sn) = (n/2)[a+an]
Sum of the sequence (Sn) = (98/2)[685+6]
Sum of the sequence (Sn) = (49)(691)
Sum of the sequence (Sn) = 33,859
Answer:
ithe answer to your question is going to be c
<h3>
Answer:</h3>
Neither one
<h3>
Step-by-step explanation:</h3>
Frog A's "unit rate" is ...
... (8 flies)/(4 minutes) = 2 flies/minute
Frog B's "unit rate" is ...
... (14 flies)/(7 minutes) = 2 flies/minute
Both rates are the same. Each frog eats 2 flies per minute.
Answer:
78.5
Step-by-step explanation:
A=πr^2 is the formula. Since you're using pi as 3.14, 3.14 times 5^2 is 78.5 (5^2 is 25 because 5x5=25)
Hong kong and Indonesia maybe
