Mathematics High School

A national survey of middle-school students asks which subject is most challenging. Which of these samples is a representative sample? A. 372 sixth-graders in a certain town B. 972 seventh-graders in a certain county C. 619 eighth-graders in different states D. 400 students from various states, representing different grades, 6–8

Answers

Answer 1
The answer would be D, since a representative sample is a set chosen from a larger statistical population.

Related Questions

Which decimal is equivalent to
2/7 ?

0.27
0.285714
0.285714
0.27

Answers

Answer:

0.285714 is the answer to your question

grade 7. i actually already learnt this but this whole quarantine thing made me forget lolz. what are factors?
example : is 3 a factor of 372?
please answer and explain <3​

Answers

Answer:

A number in a multiplication equation that makes up the total. For example,

2 x 3= 6.

2 and 3 are the factors.

Answer:

A factor is basically a number that derives from another without leaving a remainder. It sounds somewhat confusing when put into words but I'll give you some examples.

Step-by-step explanation:

in the problem you stated the answer would be yes. 3 is a factor of 372 because you can multiply 3 times another number (which in this case is 124) to get 372.

In addition, a number can have several factors. For example, these are all the factors for the number 10: 1, 2, 5, 10

notice how all these numbers multiplied by another of these same numbers on the list give you 10.

hope this helped :)

How do I do this, please explain.

Answers

All i know is that the solution to 4(x+1)=40 is x=9.

A store buys bananas by weight. The total cost to buy 5 pounds of bananas is $ 3.75. Which choice shows how to correctly calculate the total cost T to buy 2 pounds of bananans

Answers

Answer

5=$3.75

3.75÷5=.75 ($.75 per banana)

.75x2=T

T=$1.50

Step-by-step explanation:

Answer:

T = 0.75(2)

Step-by-step explanation:

$3.75 ÷ 5 = 0.75

0.75 x 2 = 1.5

T = 0.75(2)

does anyone know these?? please help :(

Answers

1- ABD
2- BC(with and arrow drawn above because it’s a ray) and BE (with and arrow drawn above because it’s a ray)
3- x=18
4- ABD=32
5- ABC=162
6- x=19
7- ABD=23

What value of x makes this equation true?
3(x + 4) = 7x - 18
O x = 5
O x = 4.5
O x = 34.5
0 x = 75.

Answers

Answer:

x = 15/2 or x = 7.5

Step-by-step explanation:

Step 1: Write equation

3(x + 4) = 7x - 18

Step 2: Solve for x

Distribute 3: 3x + 12 = 7x - 18

Subtract 3x on both sides: 12 = 4x - 18

Add 18 on both sides: 30 = 4x

Divide both sides by 4: x = 15/2 or x = 7.5

Steve Fossett completed the first solo balloon circumnavigation of the world after 13.5 days. Assuming the balloon travelled along a circle of diameter 12 750 km, roughly what was the average speed of the balloon in km/h?

A) 12
B) 40
C) 75
D) 120
E) 300​

Answers

Answer:

B) 40

Step-by-step explanation:

Average speed = distance/time

Distance = 12750 km

Time = 13.5 days = 13.5*24  hours = 324 hours

Speed = 12750 km /324 h =  39.4 km/h ≈ 40 km/h

Correct option is B) 40

Explain how to simplify the expression -98 - 31? Using the additive inverse.

Answers

Given:

The expression is -98 - 31.

To find:

The value of the given expression using the additive inverse.

Solution:

According to the  additive inverse, for any number a,

[tex]a+(-a)=0[/tex]

Using additive inverse, we have

[tex]98+(-98)=0[/tex]      ...(i)

[tex]31+(-31)=0[/tex]           ...(ii)

Now, using (i) and (ii), we get

[tex]98+(-98)+31+(-31)=0[/tex]

[tex](98+31)+(-98-31)=0[/tex]

[tex]129+(-98-31)=0[/tex]

Subtracting 129 from both sides, we get

[tex]-98-31=-129[/tex]

Therefore, the value of given expression is -129.


There was 3/4 of a pizza left over from a party. The next day, Bob ate half of what was left. How much of a whole pizza did Bob eat?

Answers

Answer:

2 and 1/2 if he ate the 1/4th also but if he just ate the half of the 3/4 its 1 and 1/2

Step-by-step explanation:

Need your help please. Please help me.

Answers

Answer:

0.08

Step-by-step explanation:

(4/5)/10 =

= 4/5 : 10/1

= 4/5 × 1/10

= ²⁾4/50

= 8/100

= 0.08

Is 39,052 divisible by 3?

Answers

3+9+0+5+2= 19
19 is not divisible by 3 so the answer is no

Answer:

no as the answer would be a decimal

Step-by-step explanation:

an easier way to know is to add up all the digits

3 + 9+0 +5+2= 19 and if that number is a multiple of 3 then it will be divisible by 3

this works for any number that should be divided by 3

example

is 2345 divisible by 3

2+3+4+5 =14 so no it is not divisible by 3

example

is 12345 divisible by 3

1+2+3+4+5 =15 so yes it is divisible by 3

hope this helps

pls can u help me with my most recent question pls and thx

A bookshelf at a library holds 156 books. There are 15 bookshelves in the children's
section. How many children's books can the library place on the bookshelves?

Answers

Answer:

10

Step-by-step explanation:

i just divided the two

Answer:

2,340

Step-by-step explanation:

A car rental company charges $19.99 per day and $0.17 per mile. Write an expression that gives the total cost in dollars to rent a car for d days and m miles.

I WILL GIVE BRAINLIEST TO THE BEST ANSWER

Answers

Answer= 19.99d + 0.17m

An investment of $7,500 increases at a rate of 10.5% per year. Find the value of the investment after 5 years.​

Answers

10.5%= 1.105
7,500•1.105=8287.5
8287.5•5=41437.5

Answer= $41,437.5

someone help please 50 points and have an explanation

Answers

Answer:

i think that the answer is 5°

100 is how many more times than 10

Answers

100 is 10 more times than 10, because 10 times 10 equals 100. I hope this helps!

Answer:

10 times greater, because 10x10=100

Step-by-step explanation:

It cost Jayden $4.80 to send 96 text messages. How much would it cost to send 155 text messages?

Answers

96 messages .... $4.80
155 messages .... x

x= (155x4.80):96=7.75

How many times does 85 go into 12

Answers

Answer:

-73

Step-by-step explanation:

Answer: -73

Step-by-step explanation: ,

B is between A and C. If AB = 7x - 2, BC = 3x + 1 and AC = 59, Find AB

Answers

Answer:

           AB = 40

Step-by-step explanation:

B is between A and C so:

AB + BC = AC

7x - 2 + 3x + 1 = 59

10x - 1 = 59

      +1     +1

 10x  = 60

÷10      ÷10

  x = 6

AB = 7x - 2 = 7×6 - 2 = 42 - 2 = 40

1. The math team held several fund-raising activities during the school year. Some
activities made money and some lost money. The profit or loss for each activity is
shown in this table.
Activity Profit / Loss
Game Booth at Dance S150 profit
Stretchable Book Cover Sales S130 profit
Candy Sales
$145 loss
Car Wash
5175 profit
Pencil Sales
$115 loss
Spirit Button Sales $110 loss
A Place these profit/loss numbers in order from LEAST to GREATEST.

Answers

Have fun with me taking points

yesterday Jenny had c baseball cards. Today she gave 5 away. Using c, write an expression for number of cards Jenny has left.​

Answers

Answer:

C - 5

thats like the only one i know sorry

Pls help me on question 15

Answers

I think it’s b try that

What type of information is being presented on this graph?

Answers

The percent of different Expenditures for State and Local Governments.

The Grand Canyon is 277 miles long and 18 miles wide. A study was completed where 17
people can fit in a sample space that is 5 feet by 6 feet. How many people can fit in the
Grand Canyon?

Answers

2,825 i am almost sure this is the right answer i apologize if not

In a laboratory, the number of bacteria in a petri dish after t days is modeled by the function B (t) = 300,000/1+999e^-0.5t What does 300,000 represent?

initial number of bacteria in the petri dish
number of bacteria in the petri dish after one day
number of bacteria in the petri dish at any given time
maximum number of the bacteria the petri dish can hold

Answers

Answer: D

Step-by-step explanation:

Number at the top is the max

Answer:

maximum number of the bacteria the petri dish can hold

Step-by-step explanation:

Of the 900 high schoolers, 45 are autistic. On the pie chart, what will be percent for the sector of autistic students?

A.5
B.7
C.6
D.4

Answers

The answer would be 5%.
The answer is A - 5%

solve 5p-1=9 by transposing method​ ? please help me friends....

Answers

Transposing means doing the same thing to each side to find an unknown value.

5p - 1 = 9

Add 1 to both sides.

5p = 10

Divide both sides by 5

p = 2

Answer:

2

Step-by-step explanation:

5p - 1 =9

5p =9 +1

5p =10

p=10 :5

p=2

The perimeter of a parallelogram is 68 me ters. The width of the parallelogram is 6 meters less than its length. Find the length and the width of the parallelogram. x meters (x-6) meters 6x+6(x-6) 68 The length of the parallelogram is The width of the parallelogram is NG Che Answer Noy Ouestion​

Answers

Answer:

62 is the width

Which list shows the numbers in order from
greatest to least
A. 32.25, 322 32.5, 32
B. 323, 32.25,325, 32
C. 32, 325,32.25, 32
D. 323, 325,324 32.25

Answers

Answer:

A

Step-by-step explanation:

X+y=__ when x=2 and y=3 (substitute and give the answer)

Answers

Answer:

5

Step-by-step explanation:

plug in the numbers

2 + 3 = 5

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