MATHEMATICS MIDDLE SCHOOL

Somestudents were asked how many pens they were carrying in theirbackpacks. The data is given in this frequency table. What is the meannumber of pens carried by these students in their backpacks?
Pens      Frequency 
0                 4
1                 5
2                 8
3                 4
4                 3
5                 1
A.2
B.3.5
C.4
D.5.5
                                                       

Answers

Answer 1
Answer:

The value of the mean of given data of pens is 4.

Add all of the numbers on the right and then divide by five.

Pens      Frequency

0                 4

1                 5

2                 8

3                 4

4                 3

5                 1

What is the mean of the data?

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.

=(0+1+2+3+4+5)/(5)\n =(20)/(5) \n=4

Therefore the value of the mean of pens is 4.

To learn more about the mean visit:

brainly.com/question/20118982

#SPJ2
Answer 2
Answer: The answer is c. Add all of the numbers on the right and then devide by five. Thd answer is C.

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What is a equivelent ratio , and a ratio tabel

Answers

A equivelent ratios are just like equivelent fractions. If two ratios have the same value,then they are equivelent,even tho they may look different! A ratio table is the relation betwen two similiar magnitudes with respect to the number of times the first contains the two.

Answer:

A ratio table is a structured list of equivalent (equal value) ratios that helps us understand the relationship between the ratios and the numbers. Rates, like your heartbeat, are a special kind of ratio, where the two compared numbers have different units

Multiply (2.4 ⋅ 1014) ⋅ (4 ⋅ 107). Express the answer in scientific notation

Answers

You multiply 2.4 with 4 to get 9.6. Then 10^14 times 10^7 and you should get 10^21. Since the number 9.6 is between 1 and 10, you don't do anything with the exponent. So the scientific notation would be 9.6 x 10^21. :)
9.6*10^21 is your answer

How does 4/15=14/n? What does n equal?

Answers

4/15 = 14/n

4 * n = 14 * 15

4n = 210 / : 4

n = 52,5

(4)/(15)=(14)/(n)=>4n=14*15=>4n=210=>n=210:4=>n=52,5

What is the area of the figure?


cm2

Answers

Area of the figure is 135cm²

Given:
length of the base : 15 cm 
height of the figure : 13 cm
height of the triangle : 8 cm

Area of the rectangle = Length x width

Width = height of the figure - height of the triangle
          = 13 cm - 8 cm
Width = 5 cm

Area of the rectangle = 15 cm x 5 cm = 75 cm²

Area of the triangle = height x base x 1/2
                                = 8 cm x 15 cm x 1/2
                                = 120 cm² / 2
Area of the triangle = 60 cm²

Area of the figure = Area of Rectangle + Area of Triangle
                             = 75 cm² + 60 cm²
Area of the figure = 135 cm²

A Total of 35 pints of blood were collected at a local blood drive. How many quarts of blood were collected?

Answers

17.5 or 17 1/2 quarts because there are two pints in a quart.
One quart has two pints. that means you need to divide 35 by 2

35 / 2 = 17.5

17,5 quarts of blood were collected at a local blood drive.

:3

How do I transform the equations 5x+4y=8 and -2x+5y=30 so that they are in the form that y=MX+b?

Answers

4y=5x+8 5y=-2x+30 the y always goes first. then the equal sign. next is x and finally just the digit which is also known as "b".
Make y the subject for both equations: 

5x + 4y = 8
4y = -5x + 8 
y = -(4/5)x + 8

-2x + 5y = 30
5y = 2x + 30
y = (2/5)x + 6

There you go, both equations are in y = mx + b for :) 
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