Let X, Y and Z be three jointly continuous random variables with joint PDF
f(x, y,z) = Axyz2/9

0
a) Find A = ? [2]
b) Find the joint marginal density function of Y and Z [2]
c) P( 1/41/3 , 1
d) P( 0

1. 3

2. 4

3. 1

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-wfz

0.02040816326

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

yes

step-by-step explanation:

yes