(3) In the game of roulette, a square bet is a bet on the four numbers that form a square on the roulette table. If you bet a dollar and the white ball lands on any of the four numbers you bet on,
you win $8; otherwise you lose your dollar. Find the expected value and the variance for the
amount you'll win.
(4) If you flip a fair coin 6 times, find the probability of having
(a) exactly one head.
(b) more than one head.
(c) same number of heads and tails.
(d) more heads than tails.

im not sure

step-by-step explanation:

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13