The average daily high temperature in Madrid peaks at 92°F in the summer and drops as low as 33°F in the winter. The temperature
can be modeled by T (d) = 29.5 cosine (StartFraction 2 pi Over 365 EndFraction (d minus 204) ) + 62.5, where d represents the day number of the year (January 1 is 1, January 2 is 2, and so on). How many days during the year is the high temperature expected to be 75°F or above?
2 answers:
Answer:
C) 131
Step-by-step explanation:
It wants us to find how many days out of the year that the temperature goes above 75 degrees Fahrenheit.
To do this, I set the y value equal to 75 (it should be , but I thought it'd be easier to see this way).
From there, you can easily visualize the days that were above and 75 degrees.
It's just simple subtraction from here:
269-138=131
Idk why I chose to help you guys when I have a bunch of work to do, but it let me get my mind off school work for a brief amount of time. I hope this still helps you guys even after two weeks. <3
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Answer:
Option B.
Step-by-step explanation:
The given quadratic equation is
We need to find the solution of given quadratic equation.
Divide both sides by 9.
Taking square root on both sides.
The solution of given equation are and
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Therefore, the correct option is B.
The value of z-score for a score that is three standard deviations above the mean is 3.
In this question,
A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.
Let x be the score
let μ be the mean and
let σ be the standard deviations
Now, x = μ + 3σ
The formula of z-score is
⇒
⇒
⇒
Hence we can conclude that the value of z-score for a score that is three standard deviations above the mean is 3.
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