What is the expected average of rolling a single die
2 answers:
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Answer:
The order from least to greatest is: h(x), g(x), f(x)
This is true for x = 3, x = 6, and x = 15
The function values are given in a table as shown in the attached image.
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Explanation:
For each function, we replace x with the specified value. Then we compare the outputs to see which is larger.
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Let's plug x = 3 into each function
Start with f(x)
f(x) = x^2 + 10x - 5
f(3) = (3)^2 + 10(3) - 5
f(3) = 34 ... use a calculator, or PEMDAS
Repeat for g(x)
g(x) = 8x+1
g(3) = 8(3)+1
g(3) = 25
and then h(x)
h(x) = 3x-4
h(3) = 3(3)-4
h(3) = 5
The order from least to greatest is h(x), g(x), f(x)
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Let's plug x = 6 into each function
Start with f(x)
f(x) = x^2 + 10x - 5
f(6) = (6)^2 + 10(6) - 5
f(6) = 91
Repeat for g(x)
g(x) = 8x+1
g(6) = 8(6)+1
g(6) = 49
and then h(x)
h(x) = 3x-4
h(6) = 3(6)-4
h(6) = 14
The order from least to greatest is h(x), g(x), f(x)
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You don't need to plug x = 15 into each function to know that h is the smallest, followed by g, then f being the largest. This is because the linear functions always have the slowest growth compared to quadratic functions. So f(x) being quadratic is the largest output of all three. The smaller of the linear outputs happens with the smaller slope. Recall that slope is rate of change telling us how fast a function grows (assuming the slope is positive). We see that h(x) has slope 3 compared to g(x) that has a slope of 8
Check out the attached image below. Note how everything to the right of point C, with x coordinate 1.65, is where the functions do not cross one another anymore. Beyond this point, h(x) is always the smallest with slowest growth, followed by g(x) in the middle, and then f(x) is the fastest growing function with the largest outputs for any one single input.
Answer:
The 99% confidence interval for the mean loss in value per home is between $5359 and $13463
Step-by-step explanation:
We are in posession of the sample's standard deviation, so we use the student's t-distribution to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 45 - 1 = 44
99% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 44 degrees of freedom(y-axis) and a confidence level of ). So we have T = 2.6923
The margin of error is:
M = T*s = 1505*2.6923 = 4052.
In which s is the standard deviation of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 9411 - 4052 = $5359
The upper end of the interval is the sample mean added to M. So it is 9411 + 4052 = $13463
The 99% confidence interval for the mean loss in value per home is between $5359 and $13463
Answer:
y = Five-sixths x – 12
Step-by-step explanation:
In the picture attached, the given line is shown. Its slope is:
m = [6 - (-4)]/[12 - 0] = 5/6
The line that is parallel to the given line has the same slope.
A line with slope m that pass through (x1, y1) satisfies:
y - y1 = m(x - x1)
Replacing with m = 5/6 and point (12, -2):
y - (-2) = 5/6(x - 12)
y + 2 = 5/6x - 10
y = 5/6x - 10 - 2
y = 5/6x - 12
