allsherm23
14.02.2021 •
Mathematics
Find the mean of five prime numbers
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Ответ:
Below.
Step-by-step explanation:
Take the prime numbers 2 3 5 7 11.
The mean = (2+3+5+7+11) / 5
= 28/5
= 5.6.
Ответ:
9514 1404 393
72.5° ≈ 73°
Step-by-step explanation:
The ladder length is the hypotenuse of the right triangle that has the distance from the building as its base and the height up the building as the height of the triangle. The given dimensions are those of the side adjacent to the angle and the hypotenuse.
The appropriate trig relation is ...
Cos = Adjacent/Hypotenuse
cos(angle) = 6/20
The inverse cosine function (arccos) is used to find the angle from its cosine.
angle = arccos(6/20) ≈ 72.54°
The angle is 72.5° rounded to tenths, or 73° rounded to degrees.