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michaelmontoya64
17.04.2020 •
Mathematics
The random variable x represents the number of dogs per household in a town with 1,000 households. Find the probability of randomly selecting a household with zero dogs. Round the answer to the nearest hundredth.
Dogs 0 1 2 3
Households 348 555 79 18
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Ответ:
0.35
Step-by-step explanation:
P(0) = 348/1000
0.348
0.35 to the nearest hundredth
Ответ:
C.360°
E.720°
F.1080
Step-by-step explanation:
Trigonometric Equations
The typical solutions of trigonometric equations are angles that comply with the conditions posed by the equalities. The angle can be expressed in radians or degrees.
Our equation is
And we must find the solutions in the interval from 270° to 810°
The angles that have cosine equal to 1 are 0° plus 360° per turn or cycle. Recall the cosine is an oscillating function whose values are repeated every 360 degrees. Thus, all possible values for x are
x=0°
x=360°
x=720°
x=1080°
We won't try more values since they won't be on the given interval. Negative values are also valid like x=-360° but they are also out of bounds.
We can see that three of the given options are correct:
C.360°
E.720°
F.1080