MATHEMATICS MIDDLE SCHOOL

What is the median in math

Answers

Answer 1
Answer: In math, the median in a group of values is the value that is closest to the center of the group when the values are organized from least to greatest.

For example, in the group [50, 51, 53, 56, 67], 53 would be the median, because it is in the middle of the group.
Hope that helped =)
Answer 2
Answer: Line your data, or numbers, from least to great.  The median is the middle number.  If there are two middle numbers, you need to find the average of those two numbers by finding their sum and dividing by 2.  I hope this helps!

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If you have a negative exponent in the denominator, how will you make it positive?

Answers

by moving it to the numorator (sorry for bad english i speak german)

Math Twelve hundred students participated in the school chemistry contest. A random sample (Sample 1) from grades 9 and 10 showed scores of: 84, 50, 99, 83, 50, 78, 88, 85, 77, and 96.

A random sample (Sample 2) of grades 11 and 12 showed scores of: 57, 62, 86, 82, 74, 78, 96, 90, 97, and 83.

What is the median of Sample 1?
What is the median of Sample 2?

Answers

The median of Sample 1 is 83.5 and  median of Sample 2 is 82.5.

What is Statistics?

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

A random sample (Sample 1) from grades 9 and 10 showed scores of:

84, 50, 99, 83, 50, 78, 88, 85, 77, and 96.

Ascending order:  50, 50, 77, 78, 83, 84, 85, 88, 96, 99

The sample has an even number of scores, so the median is the average of the two middle scores:

(83 + 84)/2

= 83.5

Therefore, the median of Sample 1 is 83.5.

For sample 2, the data set is 57, 62, 86, 82, 74, 78, 96, 90, 97, and 83.

Ascending order of scores: 57, 62, 74, 78, 82, 83, 86, 90, 96, 97

The sample has an even number of scores,

so the median is the average of the two middle scores: (82 + 83)/2

= 82.5

Hence, the median of Sample 1 is 83.5 and  median of Sample 2 is 82.5.

To learn more on Statistics click:

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Answer:

?

Step-by-step explanation:

Explain and demonstrate how to change 4/20 into a percent

Answers

4/20 is equivalent to 20%.

What is a expression? What is a mathematical equation?

  • A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.
  • A mathematical equation is used to equate two expressions.
  • A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correctanalysis, observations and results of the given problem.

We have the following fraction -

4/20

We can convert it into percent as -

[x]% = (4/20) x 100

[x]% = 20%

Therefore, 4/20 is equivalent to 20%.

To solve more questions on Equations, Equation Modelling and Expressions visit the link below -

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You can start by dividing both top and bottom by four, making it 1/5. From there you can do 1 divided by 5 making it a decimal of 0.2. Afterwards, move the decimal to places to the right and add an extra 0 making the percentage 20%.

24 miles per hour is equal to how many feet per second

Answers

We already know that 1 mile = 5280 foot
Also we know that 1 hour = (60 * 60) seconds
                                          = 3600 seconds
Then
24 miles per hour = (24 * 5280)/3600
                             = 126720/3600
                             = 35.2 feet/sec
So 24 miles/hour is equal to 35.2 feet per second. The only important thing is to know the conversions correctly. Then the problem becomes easy to solve. I hope the conversions and the procedure for solving the question is clear to you and in future you will be able to do such problems on your own without requiring any help.
24 miles per hour is equal to 35.2 feet per second

The circumference of a circle is C = 7.64(pi) inches. what is the length of the radius and diameter.

Answers

The exact circumference is shown there.  The exact circumference has the length of the diameter and pi.  Like,  say a diameter was 8 inches.  It would be 8(pi).

The diameter here is 7.64 inches.  A radius is half as big as a diameter,  so divide the diameter by 2.  The radius is 3.82 inches.

Hope this helps!

Brandon is painting a 28 ft by 18 ft rectangular wall in an office. Find the area of the wall. How many gallons of paint must be purchased to paint two coats on the wall if one gallon of paint covers 400 square feet?

Answers

Answer:

He will need 2 gallons of paint.

Step-by-step explanation:

28 x 18 = 504 ft
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