MATHEMATICS MIDDLE SCHOOL

Which is the least valid way to stimulate how many boys and girls are in a random sample of 20 students from a school that is half boys and half girls?A. Flip a coin 20 times, assigning one out come to boys and the other to girls

B. Drop 20 coin at once and count the number of each outcome

C. Count how many boys and girls are in your mat class and use a proportion

D. Have a calculator generate 20 random integers and count the number of even and odd integers

Answers

Answer 1
Answer:

Total number of Student in the School in which half are boys and Half are girls =20

Probability of an event

             =\frac{\text{Total favorable oucome}}{\text{Total Possible outcome}}                  

Probability of Number of Boys as well as Probability of Number of Girls

                               =(10)/(20)\n\n=(1)/(2)  

The Most appropriate option is

Option C

Count how many boys and girls are in your math class and use a proportion.

In Option A, B and D

The probability of each outcome that is Success and Failure will be nearly equal to 0.50 .

But in Option C, you can't say precisely that Probability will be equal to , 0.50 in each case , that is Success and Failure.
Answer 2
Answer: I think the answer is C

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If x=2, and y=3, then 40-(9x)+y^2=____

Answers

Answer:

31

Step-by-step explanation:

We need to substitute values of x and y into given formula

40 - (9x) +y² = 40 - (9*2) + 3² = 40 - 18 + 9 = 31

Answer:

40-(9*2)+3^2

= 40 - 18 +9

= 31

4. Find the measure of each interior angle of a regular polygon with 12 sides.1800 degrees
150 degrees
180 degrees
145 degrees

Answers

For any regular polygon the formula for each interior angle is (180(n-2))/n where n is the number of sides.
Now we'll put 12 in there and it is:
(180(12-2))/12
180(10)/12
1800/12
150 degrees.

Hope this helps :)

It costs $6 per pound for peanuts at the Blessed Food Market. Which of the following represent the range of the function in ferms of cost per pound?A. $6
B. Amount of Peanuts
C. Cost of Peanuts Purchased
D. Peanuts Purchased

Please answer. I will give you 11 points.

Answers

I think it's the cost of peanuts since the range is the y axis and the x axis shows the # of pounds of peanuts

merge has 14 2/55 feet of chain she wants to make pieces 3/8 foot long how many can she make? slove using decimals show your work

Answers

do you need it in decimal form? if so can I give you the answer in fraction form and you can convert it? I got 37 71/165 as the answer. I divided 14 2/55 by 3/8 thus resulting in the answer I told you. In decimal form it is 37.430 the 430 continues on.

Which expression shows a sum of three terms?

3x
3 + x
x3
x + 3 + x

Answers

Answer:

x + 3 + x

Step-by-step explanation:

The sum of three terms means that three terms have been added.

3x is the answer; it does not show the terms being added.

3+x is the sum of two terms.

x³ is a product.

x+3+x shows 3 things being added, so it is the correct answer.

Answer:

x+3+x

Step-by-step explanation:

15 points because I need it quickly!! I will give brainliest to first answerMiss Holman gave a 90-cent tip to a waitress for serving a meal costing $6.00, before tax. a) What percent of the bill was her tip? b) If tax was 6.25%, what was the total bill including tip?

Answers

Answer:

12.60

Step-by-step explanation:
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