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WITCHER [35]
3 years ago
13

. A random sample of 250 working adults found that 37% access the internet at work, 44% access the internet at home, and 21% acc

ess the internet at both work and home. What is the probability that a person in this sample accesses the internet at home or at work
Mathematics
1 answer:
3241004551 [841]3 years ago
8 0

Answer:

0.6 is the required probability.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

Probability of accessing internet at work = 37%

P(W)=0.37

Probability of accessing internet at home = 44%

P(H)=0.44

Probability of accessing internet at work and home = 21%

P(W\cap H)=0.21

We have to evaluate the probability that a person in this sample accesses the internet at home or at work.

P(H\cup W) = P(H) + P(W) - P(W\cap H)\\P(W\cup H) = 0.37 + 0.44-0.21\\P(H\cup W)  = 0.6

Thus, 0.6 is the probability that a person in this sample accesses the internet at home or at work

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Answer:

8

Step-by-step explanation:

If Helen scores 4 for each time Glenn scores 3

4 x 2=8

4 0
2 years ago
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What is the domain of the function y=tan (x/8)<br> Please Help<br> 15 Points
7nadin3 [17]

1. You have the function y=tan(\frac{x}{8} )

2. You know that y=\frac{sinx}{cosx} with cosx\neq 0, because the division by zero is not defined. So , cosx=0 for \frac{(2n+1)\pi}{2} where n is a integer number.

3. Then, to find the domain of the function given in the problem, you must make \frac{x}{8} \neq \frac{k\pi}{2}  \\ x\neq 4k\pi

Where k is odd number.

4. Therefore:

x\neq 4\pi (2n+1)

5. Finally, the domain is: 4\pi (2n+1)

The answer is: 4\pi (2n+1)

5 0
3 years ago
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Twelve subtracted from twelve times a number is 240. What is the number?
vovangra [49]

Answer:

21

Step-by-step explanation:

Let x = the number

12x-12 = 240

12x = 252

x = 21

5 0
2 years ago
Which of the following equations has one real solution?
erastovalidia [21]

Answer:

4x2−12x+9=0

Step-by-step explanation:

The equation, 2x2+x+3=0, does not have a solution

The equation, x2+5x−3=0, equals -5/2+1/2√37 and -5/2+-1/2√37

The equation, x2−5x+4=0, equal 1 and 4

The equation, 4x2−12x+9=0, equals only 3/2

Hope this Helps

4 0
2 years ago
What is the length x of the right triangle, rounded to the nearest<br> tenth?
Zarrin [17]

Answer:

109.5; B

Step-by-step explanation:

From your identity,

CosA = adjacent/ hypothenus

A represent an arbitrary angle between the sides in question.

In the question above, A=64

Hypothenus is the longest side and adjacent is the side just below the angle .

In the above case,

Hypothenus= X

adjacent =48

This means;

Cos64 = 48 /X

X = 48 / cos64; [ from cross multiplication and diving through by cos64]

X = 48 /0.4383 [ cos64 in radian = 0.4383]

= 109.51

= 109.5 to the nearest tenth.

Note( do your calculation of angle in radian or else, you won't get the answer)

6 0
2 years ago
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