Result:
6.1°; 425.86 m.
Step-by-step breakdown:
The information provided states that the airplane is at an altitude of 5.7 miles above ground level, while the "radius of Earth is about 4000 miles." Thus,
θ = 2 × cos^-1 (a/ (a + b)), where a = 4000 miles, and b = 5.7 miles.
θ = 2 × cos^-1 (4000/ (4000 + 5.7)) = 6.1°.
To calculate the distance in meters:
Change in distance = 6.1° /360° × 2π × 4000 miles = 425.86 meters.
Consequently, BD⌢ measures at 6.1° and the distance corresponding to this section of Earth is 425.86 meters.
X² - 7x - 8 = 0
Applying the Viet theorem
x₁ + x₂ = -p
-1 + x₂ = 7
x₂ = 7 + 1
x₂ = 8
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Answer:


Step-by-step explanation:
Previous concepts
Normal distribution, is defined as a symmetric "probability distribution centered around the mean, indicating that values near the mean are more common than those further away".
The Z-score measures a value's relation to the mean of a set of values, displayed in terms of how many standard deviations away it is from that mean.
According to the central limit theorem, "with a population having mean μ and standard deviation σ, if we draw sufficient random samples from this population with replacement, the means of those samples will resemble a normal distribution, regardless of the original population's shape, as long as the sample size is large enough".
Solution to the problem
In this scenario, we select a sample size of n = 100
The central limit theorem informs us that the distribution of the sample mean
is defined by:
Thus, the mean for the sample would be:

And the standard deviation would be:

17Step-by-step explanation:To determine how many shots Madeline is likely to make, divide 20 by 100 and then multiply by 85.
A geometric sequence models the bounce heights:
Use the formula
A (subscript n) = Ar(n-1)
a = the first-term value
n = the index of the term you want (for the fourth peak, n = 4)
r = common ratio, found by dividing the second term by the first
Here r = 18/27 = 2/3 because 27×(2/3) = 18, and similarly 18×(2/3) = 12
For the fourth peak n = 4
Compute: 4th term = 27(2/3)^(4-1) = 8
Therefore the height at the fourth peak is 8