Answer:
$4.35
Step-by-step explanation:
The expected value of a random variable <em>X</em>, often denoted as E(<em>X</em>), indicates the probability-weighted average of all possible values/events. The general formula of expected value is
.
Therefore, the expected value of the winnings from a game is
.
I’m sorry i can’t help l need a picture
Answer:
you may
2x+15+4x+21=90 simplified is 6x+36=90
m<a=33º
m<b=90º
m<c=57º
Step-by-step explanation:
6x+36=90
6x=54
x=9
2(9)+15=33
4(9)+21=57
Let the interior angle be x.
x/(180-x) = 13/2
2x= 2340-13x
15x=2340
x=156
exterior angle= 180-156=24
Number of sides=360/24=15
15-sided polygon
Answer:
volved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.