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a_sh-v [17]
3 years ago
9

1.) A committee would like to determine four people to office, namely, a president, vice president, secretary and treasurer. In

how many possible ways can four people be elected from this class into these positions?
You are taking a 5 answer multiple choice exam. There is one question you do not know and you must guess. What is the probability of you guessing the correct answer?
Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
7 0
1).  No answer is possible until we know how many people
there are in "this class".

2).  If there are 5 choices, and only one of them is correct,
and you close your eyes and choose one of them completely
at random, then the probability of choosing the correct one is ...

                                 1 / 5  =  20% .
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Answer:

25%

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15 times 6 is 90

90 is 25% of 360

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No, she wrong it will be less than $20

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4. Ten less than the product of six and eight less than a number
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What is the pay earned for 27 hours at $4.65 per hour?
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From a radar station, the angle of elevation of an approaching airplane is 32.5 degree. The horizontal distance between the plan
denis23 [38]

Answer: 42.21 km

Step-by-step explanation:

We can solve this using trigonometry, since we have the following data:

\theta=32.5\° is the the angle of elevation

d=35.6 km is the horizontal distance between the plane and the radar station

x is the hypotenuse of the right triangle formed between the radar station and the airplane

Now, the trigonometric function that will be used is <u>cosine</u>:

cos\theta=\frac{d}{x} because d is the adjacent side of the right triangle

cos(32.5\°)=\frac{35.6 km}{x}

Finding x:

x=\frac{35.6 km}{cos(32.5\°)}

x=42.21 km

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