express the series using sigma notation. 8 + 10 + 12 + + 24.

C

Step-by-step explanation:

Number on top: largest value of k

On the right: the expression for k

Bottom: the first number for k

So,

1. 2³ = 8, but k can not be 3, so it can't be A or B.

2. 8 ÷ 2 = k, which means that the first k should be 4.

So, the answer is C.

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours