Enter the correct letter to match each summation expression with the property or formula. n
Σ
i=1
cai is equal to
. a
n(n + 1)(2n + 1)
6

n
Σ
i=1
i is equal to
. b
n(n + 1)
2

n
Σ
i=1
c is equal to
. c c
n
Σ
i=1
ai

n
Σ
i=1
i3 is equal to
. d cn

n
Σ
i=1
i2 is equal to
. e
n(n + 1)
2
2

Given: ac and db are diameters. m∠3=

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.