Answer:
Mean, E(x) = 0.17
Variance, V(x) = 0.12
Step-by-step explanation:
90% contains no defective bulbs, P(X=0) = 0.9
5% contain one defective bulbs, P(X=1) = 0.05
3% contain two defective bulbs, P(X=2) = 0.03
2% contain three defective bulbs, P(X=3) = 0.02
The mean for the number of defective bulbs:
Variance for the defective bulbs:
V(x) = 0.29 - 0.17
V(x) = 0.12
Answer:
Reflection over the x-axis
Step-by-step explanation:
Process of elimination, all of the other answers and the image is reflected over the x-axis perfect.
If rotated 270 degrees the image would be vertical
If reflected over the y-axis the image would be in Quadrant I not II
If rotated 90 degrees the image would be vertical as well.
So all othe the other answers are wrong making B) right.
4:5 8:10 12:15 that some eqivelent ratios
Answer: His balance is -$100
Step-by-step explanation: 200 - 300 = -100
Answer:
The correct option is -439
Step-by-step explanation:
We have given that s(x) = 2 – x2 and t(x) = 3x. We have to find the equivalent value.
s(x) = 2 – x2
t(x) = 3x
(s o t)(x)=s(t(x))
s(t(x)) = 2-(3x)^2 = 2-9x^2
So, now putting the value of s of t(x) as (-7) we will get the value as:
(s o t)(-7) = 2-9(-7)^2 = 2 - 9(49)
(s o t)(-7) = 2-441
(s o t)(-7) = -439
Thus the correct answer is option A...