Answer:
B. 29.5
Step-by-step explanation:
Cos=A/H
=12/x
x=12/cos66
Answer:
can i getttt a pictture
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Equation of variance:
Total Variance = sum (i=1, N) {c^2,variance^2}
= c1^2*variance1^2 + c2^2*variance2^2 + .....
Variance of X = 1
Variance of Y = 5
Variance of Y - 2X = (1^2)*(5) - (2^2)**(1)
= 5 - 4 = 1
