Answer:
2
Step-by-step explanation:
Answer:
both can't really decide
Step-by-step explanation:
Answer:
The interval in which the average is likely to fall :
Step-by-step explanation:
Given : A poll found that a particular group of people read an average of 12.8 books per year.
The pollsters are 99% confident that the result from this poll is off by fewer than 3.93 books from the actual average x.
The inequality to express this situation involving absolute value will be :-
Hence, the interval in which the average is likely to fall :
Answer:
3485 ft
Step-by-step explanation:
The height above the radar station is found using ...
height = distance × sin(angle)
height = (4200 ft) × sin(55°) ≈ 3440 ft
Since the radar station is 45 ft above the ground, the height of the clouds will be an additional 45 ft:
3440 ft + 45 ft = 3485 ft . . . . height of clouds
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<em>Comment on units</em>
You need to be a bit careful here because one dimension is given in feet and another in yards. You need to use 1 yard = 3 feet to figure that 1400 yards = 4200 feet. You could convert 45 ft to 15 yards and report the cloud height in yards. That would not be wrong, but it would be unusual.
Since its asking about a balloon material, the question is asking for the surface area.