ganggang6223
22.02.2021 •
Mathematics
Yandel will place a ramp over a set of stairs at the backyard entrance so that one end is 5 feet off the ground. the other end is at a point that is a horizontal distance of 40 feet away, as shown in the diagram. The angle of elevation of the ramp is represented by e°. Each step of the stairs is one foot long. What is the angle of elevation to the nearest tenth of a degree?
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Ответ:
10
Step-by-step explanation:
A group of 10 people is choosing a chairperson and vice-chairperson. They put all 10 people's names into a hat. The first name drawn becomes chair. The second name drawn becomes vice-chair. How many possible combinations of chair and vice-chair are there?
19
90
100
10! (10 factorial)
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