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Mumz [18]
3 years ago
9

Students at one middle school are called to lunch by their grade level. To determine whether all students at the school liked to

eat hamburgers, hotdogs, or pizza for lunch, the lunchroom manager surveyed the first 30 students that were in the lunchroom. What type of sample is this? Please Help
Mathematics
1 answer:
Sliva [168]3 years ago
5 0

Answer:

Cluster Sample

Step-by-step explanation:

According to ThoughtCo., "A cluster sample involves using a simple random sample of evident groups that the population contains." Since only the first students that enter the cafeteria are surveyed, not all grade levels are included. Since most schools do lunch by grade, only a certain grade would get to have a say, so there could be some bias.

(Edit: Looking back on this it might could be a convenience sample but it depends on what the answer choices are)

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Answer:

58.8

Step-by-step explanation:

multiply 16% by 70 then substract your answer by 70

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PLEASEE HELP THIS IS DUE TODAY
dangina [55]

Answer:

The first one is 360 degrees. The second one is 1080.

Step-by-step explanation:

The sum of the interior angles of a quadrilateral are always 360. If you subtract 90 from 360 to get 270. Multiply 270 by 4 to get 1080.

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3 years ago
X*2+1=10 then x=? Tell me the value of x
Trava [24]

Answer:

<h2>4.5</h2>

Step-by-step explanation:

x \times 2 + 1 = 10

2x +  1 = 10

Move constant to R.H.S and change its sign

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\frac{2x}{2}  =  \frac{9}{2}

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3 years ago
What expression simplifies to 2i ? help asap lots of points
PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

First, consider the following expression.

(6x + 8) + (4x + 2)

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You are applying for an 80/20 mortgage to buy a house costing $145,000. The first (80%) mortgage has an interest rate of 4.75%,
babymother [125]

Answer:

$291,016.80

A is correct.

Step-by-step explanation:

You are applying for an 80/20 mortgage to buy a house costing $145,000.

Loan Formula:

EMI=\dfrac{P\cdot r}{1-(1+r)^{-n}}

Case 1:

Loan amount, P = 80% of 145000 = $ 116,000

Rate of interest, r = 4.75% = 0.0475

Time of loan, n = 30 years = 360 months

Substitute the values into formula.

EMI=\dfrac{116000\cdot \frac{0.0475}{12}}{1-(1+\frac{0.0475}{12})^{-360}}

EMI=605.11

Total payment for case 1: 605.11 x 360 = $217,839.60

Case 2:

Loan amount, P = 20% of 145000 = $ 29,000

Rate of interest, r = 4.75% = 0.07525

Time of loan, n = 30 years = 360 months

Substitute the values into formula.

EMI=\dfrac{29000\cdot \frac{0.07525}{12}}{1-(1+\frac{0.07525}{12})^{-360}}

EMI=203.27

Total payment for case 1: 203.27 x 360 = $73,177.20

Total amount of the mortgage = $217,839.60 + $73,177.20

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Hence, The total amount of the mortgage is $291,016.80

3 0
3 years ago
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