Answer:
P(L ≤ l) =P (1-l ≤ U ≤ l)= l- ( 1 - l ) = 2 l - 1
Step-by-step explanation:
let assume that stick has length 1.Random variable L that make length of a longer piece and random variable U that mark point .See that L < l means that
U≤ l and 1-U ≤l
P(L ≤ l) =P (1-l ≤ U ≤ l)= l- ( 1 - l ) = 2 l - 1
this means 1-l≤U≤l
so we have
if we have L [1/2,1]
then apply the formula we have E(L)=3/4
U.v = (1*-5) + (6*-2) = -5 - 12 = -17 <------- Answer
Step-by-step explanation:
First we need to create and expression.
If there are seven more boys than girls in the class, and we don't boys as variable "b", and girls as variable "g" then:
b=g+7 or g=b-7
Next, we know the class has 29 students comprised of boys and girls. With the information we have we can set up an equation and solve for boys.
29=b+g
29=b+(b-7)
29=2b-7
36=2b
b=18
to check our answer:
g=29-b
g=29-18
g=11, which is seven less than 18.
Answer:
129.6º
Step-by-step explanation:
7 + 10 + 2 + 6 + 11 = 36%
QAV = 36% * 360º = 129.6º