MATHEMATICS MIDDLE SCHOOL

A middle school principal wants to change the lunch menu at the school. The principal surveys the students to determine how the students would feel about the changes. Which survey method will produce the best representative sample? A: survey every fifth student who rides in a car to schoolB: survey 3 randomly selected students from every homeroomC: survey every tenth seventh grade student during lunchD: survey 5 randomly selected students from every art, drama, and music class

Answers

Answer 1
Answer:

The survey method that should generate the best representative sample should be option b.

Best survey method:

It is considered to be the best way for survey since all the other should contain the sort of the variable.

Also, the principle should not know who purchased the lunch and who does not so here the kids should be asked who ride the car since the kids who ride the buses or the 7th grade students.

So based on the above information, we can say that the option b is correct.

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Answer 2
Answer:

Answer:

B: Survey 3 randomly selected students from every homeroom.

Step-by-step explanation:

This would be the best way to survey, because all the others have some sort of variable. The principle doesn't know who buys lunch and who doesn't, so why would he just ask kids who ride in a car as there are kids who ride buses, or only 7th grade students, so the best answer would be something that everyone has, like homeroom.

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Find the distance cd rounded to the nearest tenth. c=(8,-3) and D=(-9,-6)

Is 36 km greater than less than or equal to 36,000 m

Answers

The answer is the same
Every km is worth 1000 m

Mr. Westnoticed grapes were priced at $2.99 per pound, and bananas were priced at $0.99 per pound. How much would 3 pounds of grapes and 2 pounds bananas cost altogether?A.$3.98
B.$9.96
C.$10.95
D.$2.96

Answers

This is the answer, hope I wasn’t late

Compare the values of the underlined digits 6,300 and 530 with three being the underlined digit.

Answers

The value of 3 in 6300 is ten times the value of 3 in 530

Further Explanation  

Place value and total value  

  • Place value refers to the value represented by a digit in a number based of its position in the number. Place values can be ones, tens, hundreds, thousands, etc  

For example;

In the number; 13,548, the place value of the digits in the number are;

Ones -8

Tens - 4

Hundreds - 5

Thousands - 3

Ten Thousands – 1

Total value  

  • Total value is given as the product of the digit and its place value.
  • For example; in the number, 13,548.  
  • Total value of digits 1, 3, 5, 4, and 8 in the number 13,548 will be;

1 x 10,000 = 10,000

3 x 1000    = 3,000

5 x 100      = 500

4 x 10        = 40  

8 x 1          = 8

The sum of the total values of digits in a number will be equivalent to the value of that number.

In the question.

Comparing the value of 3 in 6,300 and 530

The value of 3 in 6,300 is 300 and  

The value of 3 in 530 is 30

Therefore; the value of 3 in 6300 is ten times the value of 3 in 530

Keywords: Place value, total value

Learn more about;

Level: Middle school

Subject: Mathematics  

Topic: Place value and total value  

Comparing the values of 3 in each of 6,300 and 530, we will have:

3 in 6300 is 3 hundreds while 3 in 530 is 3 tens

How to solve number place value?

Place value is defined as the value of each digit in a number. For example, the 5 in 853 represents 5 tens, or 50; however, the 5 in 5,003 represents 5 thousands, or 5,000.

We want to compare the values of 3 in each of the numbers 6,300 and 530.

Thus, we can say that:

3 in 6300 is called 3 hundreds while 3 in 30 is called 3 tens or 30

Read more about Number place value at: brainly.com/question/24997908

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Which of the following expressions is equivalent to 6 - (-5)?a. 6 - 5
b.6 + 5
c.-6 + 5
d.-6 + (-5)

Answers

- and - is +

therefore 6 + 5 is the correct answer (B)
2 minus signs make an addition sign.
6--5=6+5
B.6+5

Pansy measured the height of a window frame as 5.12 feet, but the actual height was 6 feet. What is the percentage of error in Pansy's measurement?A: 6.82
B: 6.88
C: 14.67
D: 11.12

Answers

The percentage error of the height of the table is: C. 14.67

Recall:

  • Percentage error can be calculated using the formula: (what was measured - the actual measurement) / actual measurement × 100%.

Thus:

The height that was measured = 5.12 feet

Actual measurement of the height = 6 feet

Percentage error = (6 - 5.12) / 6 × 100

Percentage error = 14.67

Learn more about percentage error here:

brainly.com/question/5493941
Percent error=100*(measurement-actual dimension)/actual dimension

pe=100(5.12-6)/6=-14.67%

So there is a 14.67% error.

If the example is y= -2x and y= x+3 Does the point (2,5) make either equation true?

Answers

Answer:

the second one is true

Step-by-step explanation:

5=-4. 2nd one 5=5
The second one is true
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