Answer:
Step-by-step explanation:
The expected value E[(1-x)(1-x)] is 1/4. This represents the average value of the function (1-x)(1-x) for the given probability distribution of x values.
We are given an indicator variable x with values 0 and 1. The probability of x = 0 is 1/4 and x = 1 is 3/4. We need to find the expected value E[(1-x)(1-x)].
Step 1: Determine the function we are working with.
We have the function (1-x)(1-x), which simplifies to (1-2x+x^2).
Step 2: Find the probabilities for each value of x.
For x = 0, the probability is 1/4.
For x = 1, the probability is 3/4.
Step 3: Compute the function values for each x value.
For x = 0, (1-2(0)+0^2) = 1.
For x = 1, (1-2(1)+1^2) = 0.
Step 4: Calculate the expected value.
E[(1-x)(1-x)] = (1)(1/4) + (0)(3/4) = 1/4.
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solve for c
B. 75
C. 45
D. 90
the answer on apex is 45°
The solutions of the quadratic equation x² + 13 = 8x + 37 are x = 4 + 2√10 and x = 4 - 2√10.
The quadratic equation is defined as a function containing the highest power of a variable is two.
The given equation as:
x² - 8x + 13 = 37
Subtracting 37 from both sides, we get:
x² - 8x - 24 = 0
Now, we have the equation in standard form, so we can use the quadratic formula to find the solutions:
x = (-b ± √(b² - 4ac)) / 2a
Here, a = 1, b = -8, and c = -24.
Substitute these values into the quadratic formula, and we get:
x = (-(-8) ± √((-8)² - 4(1)(-24))) / 2(1)
x = (8 ± √(64 + 96)) / 2
x = (8 ± √160) / 2
x = (8 ± 4√10) / 2
Simplifying, we get:
x = 4 ± 2√10
Therefore, the solutions of the quadratic equation x² + 13 = 8x + 37 are x = 4 + 2√10 and x = 4 - 2√10.
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Answer:
Step-by-step explanation:
x^3=216