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4 years ago

The principal uses a computer to randomly select the name of a student from all the students in

Mathematics

1 answer:

Arlecino [84]4 years ago

7 0

Complete Question

Stillwater Junior High divides students into teams taught by a group of teachers. The table shows the number of students in each team.

Team{Number of Students}

Acers{78}

Blazers{80}

Outbacks{83}

Quasars{77}

Voyagers{82}

Total-400

Answer:

(A)81/399

Step-by-step explanation:

The probability that the Principal selects a voyager on the first try is:

82/400

Since another student is to be selected, the total population has reduced by 1 and the number of voyagers likewise has been reduced by 1.

Therefore:

Probability that another voyager is selected on the second try =

81/399

The correct option is A.

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Convert 300 weeks to years. (please show the steps to how you did the problem.)

timurjin [86]

Answer:

5.75342

Step-by-step explanation:

This conversion of 300 weeks to years has been calculated by multiplying 300 weeks by 0.0191 and the result is 5.7534 years.

4 0

3 years ago

Read 2 more answers

A line has a slope of 1/2 and a run = 50. Find the rise of the line. Type a numerical answer in the space provided. If necessary

Vinvika [58]

Answer:

100

Step-by-step explanation:

1/2 = 50/x

(cross multiply)

100 = x

7 0

4 years ago

A school was attempting to determine the proportion of students who have access to the internet in their homes. Demographic data

Likurg_2 [28]

Answer:

Z = -1.789

P value = 0.036807

Step-by-step explanation:

Here

H0: p = 0.85 students will have access to the internet at home

Ha: p < 0.85 students will have access to the internet at home

As per the given data, out of 120 sampled students, 95 have access to internet at home

This is 79.17 % of the total number of sampled students.

The Z values is given by

$Z = \frac{p-p'}{\sqrt{\frac{p(1-p)}{n} } }$

Substituting the given values, we get -

$Z = \frac{0.7917-0.85}{\sqrt{\frac{0.85(1-0.85)}{120} } }\\Z = -1.789$

The sample proportion of 0.7917 is about -1.789 standard errors below the population proportion given in the null hypothesis.

Considering, result is significant at p < .05, the P-Value is .036807.

3 0

3 years ago

Help me please! It's really urgent!

finlep [7]

78 is the correct answer.

6 0

3 years ago

Read 2 more answers

For f(x) = 2x + 1 and g(x) = x^2 - 7, find (f-g)(x)

Andre45 [30]

Answer:

$\displaystyle (f - g)(x) = -x^2 + 2x + 8$

Step-by-step explanation:

We are given the two functions:

$\displaystyle f(x) = 2x + 1 \text{ and } g(x) = x^2 - 7$

And we want to find:

$\displaystyle (f- g)(x)$

Recall that:

$\displaystyle (f - g)(x) = f(x) - g(x)$

Substitute and simplify:

$\displaystyle \begin{aligned}(f-g)(x) &= f(x) - g(x) \\ \\ &= (2x + 1) - (x^2 - 7) \\ \\ &= (2x +1 )+ (-x^2 + 7) \\ \\ &= -x^2 +2x + 8\end{aligned}$

In conclusion:

$\displaystyle (f - g)(x) = -x^2 + 2x + 8$

6 0

3 years ago