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Elis [28]
3 years ago
15

Lucy collects data from a random sample of seventh-graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 sev

enth-graders attending Lucy’s school, how many would be expected to attend afterschool programs?
Mathematics
1 answer:
34kurt3 years ago
8 0
Out of 40 respondents, 7 attend afterschool programs. \frac{7}{40}=0.175, so 17.5% of students attend afterschool programs.
0.175*200=35.
So, out of 200 seventh-graders, 35 would be expected to attend afterschool programs.
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Answer:

Answers may vary but will most likely be close to 2.

Step-by-step explanation

  1.        Given:

                 first test:38%

                 second test:76%

    SIMULATION FIRST TEST

Randomly select a 2-digit number.

If the digit is between 00 and 35 then you passed the test,else you did not pass the test.

SIMULATION SECOND TEST

Randomly select a 2-digit number.

if the digit is between 00 and 75 then you passed the test,else you did not pass the test.

SIMULATION TRIAL

Perform the simulation of the first test.if you did not pass the first test then perform the simulation of the second test.

Record the number of trials needed to pass the first or second test.

Repeat 20 times and take the average of the 20 recorded number of trials

(what is the sum of recorded values divided by 20).

Note:you will most likely obtain a result of about two trials needed.

7 0
3 years ago
Tamara earns $8 an hour at her job working 25 hours per week. If 22% of her paycheck goes to taxes, what is Tamara’s monthly cas
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To solve this problem you must apply the proccedure shown below:

1. First, you must multiply $8 by the hours given in the exercise:

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2. Now, multiply the result obtained above by 4, to calculate her monthly income:

(200dollars)(4)=800dollars

3. If 22% of her paycheck goes to taxes, you have:

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4 years ago
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Answer:

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ExtremeBDS [4]

Answer:

<h2>         y = -¹/₄x - 1</h2>

Step-by-step explanation:

If two lines are perpendicular then the product of theirs slopes is equal -1:

y=m₁x+b₁   ⊥   y=m₂x+b₂   ⇒    m₁×m₂ = -1

y = 4x - 2   ⇒   m₁=4

4×m₂ = -1        ⇒    m₂ = -¹/₄

The line y=-¹/₄x+b passes through point (4, -2) so the equation:

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4 0
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