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xenn [34]
3 years ago
8

Helppppppp mathhhhhhhhh

Mathematics
1 answer:
tamaranim1 [39]3 years ago
5 0
Cosα=adjacent/hypotenuse

In this case you have:

cosα=FE/DF

DF=FE/cosα, we are told that FE=13 and α=34 so

DF=13/cos34

DF≈15.68 which is

DF≈15.7 (to nearest tenth)
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Answer:

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Let me know if this helps!

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Based on a​ survey, when 1009 consumers were asked if they are comfortable with drones delivering their​ purchases, 42% said yes
Darina [25.2K]

Answer:

B.The probability 0+ indicates that the probability is a very small positive value. It indicates that the event is​ possible, but very unlikely.

Step-by-step explanation:

Out of 1009 consumers a sample of 30 consumers is selected and asked the questions. So, the sample size is 30.

n = 30

Based on previous survey, 42% are comfortable with the drone. So in this sample, we can consider the probability of success to be 42%.

p = 42% = 0.42

q = 1 - p = 1 - 0.42 = 0.58

We want to find the probability of getting exactly 24 consumers who are comfortable with drones.

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Since, the sample size is fixed, the selections are independent and probability of success is constant, we can use the Binomial Probability to answer this problem. All the conditions of a Binomial Distribution are being satisfied.

According to the formula of Binomial Distribution, the probability of getting exactly x success among n trials is given as:

P( X = x )=^{n}C_{x}(p)^{x}(q)^{n-x}

Using the values, we get:

P(X = 24) =^{30}C_{24}(0.42)^{24}(0.58)^{6}= 0.00002

Thus, the probability of getting exactly 24 consumers from a sample of 30 who are comfortable with drones is 0.00002, which is extremely small.

Since, the value of probability is a very small positive number, it indicates that event is possible but very unlikely. An impossible event has probability equal to 0.

Therefore, option B gives the correct answer.

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3 years ago
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2 years ago
Which number can each term if the equation be multiplied by to eliminate the decimals before solving
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Answer is c 10 eliminate the decimal l
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