In the game ofâ roulette, a player can place a â$10 bet on the number 11 and have a 1/38 endfraction 1 38 probability of winning. if the metal ball lands on 11â, the player gets to keep the â$10 paid to play the game and the player is awarded an additional â$350. âotherwise, the player is awarded nothing and the casino takes theâ player's â$10. find the expected valueâ e(x) to the player for one play of the game. if x is the gain to a player in a game ofâ chance, thenâ e(x) is usually negative. this value gives the average amount per game the player can expect to lose.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

m∠a is 90°

m∠b is 40°