STATISTICS.
The discrete random variable X has the probabilities:
X -2 0 2 4
P(X=x) a b a c
E(X)=2
1. Show that c=0 ,5
2. If Var(X)= 5,6 find the a and b.
Thank you.

answer:   rlly

step-by-step explanation:

false

step-by-step explanation:

rulers and compasses arent required in order to bisect an angle because when bisecting angles, you're making a "half circle" and considering in order to bisect an angle it wouldn't be straight, you wouldn't need either of the two

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: