Circumference = 2

r
r = 12.5
2 *

* 12.5 ~ 78.540
The answer is about 78.540
Answer:
an = 1/2 (n) (n+1)
Step-by-step explanation:
1,3,6,10,.........
3-1=2
6-3=3
Each term is different so there is no common difference. It is not an arithmetic sequence
3/1=3
6/3 =2
Each term is different so there is no common ratio. It is not a geometric sequence
1 3 6 10
+2 +3 +4
a1 = 1
a2 = 3
a3 = 6 = 2*3
a4 = 10 = 2*5
Answer:
Option B is correct.
The slope of the function is, -4
Step-by-step explanation:
The slope of a line is usually represented by the symbol m.
represents the first point whereas
represents the second point then the formula of slope is given by:
m= 
From the table;
Let
= ( -4 , -2) and
= (-2 , -10)
then,
by definition of slope we have;
m=
=
=
Therefore, the slope of the function, m = -4
A. (-) * (-) * (-) * (-) = positive
B. (-) * (-) * (-) = negative
C. (-) * (-) = positive
D. (-) * (-) * (-) = negative but times 0 = 0
so answer is
B. product will be negative