(08.01 LC)
The track-and-field coach wants to know whether the students in the entire school prefer track races or field events. The coach draws a random sample from the following groups:

All students in each grade
All teachers in the school
All boys in each grade in the school
All students on the track-and-field team

Which group best represents the population she should take a random sample from to get the best results for her survey?

Answers

Answer 1

Answer:

all students on the track-and-field team

Step-by-step explanation:

if the coach wants to find out if they prefer track or field he/she has to ask the people who are experiencing it right now and tell him or her if they prefer this or not

Answer 2

Answer:

It is All students on the track-and-field team..  Im in flvs 7th and I know Im VERY late and I am currently doing the test RN so Thats all GUYS!

Step-by-step explanation:


Related Questions

Write 0.728 as a percent and as a simplified fraction.

Answers

Answer:

91 /125

Step-by-step explanation:

What operation do you do to the exponents when you are told to multiply ?


What property is this called
5(3x+6)


Solve the following problem 2x+4+5x=8x-6

PLEASE I NEED HELP URGENT

Answers

Answer:15x+-2

Step-by-step explanation:

you add 2x+5x+8x=15x

then you add 4+-6

which is the following is the correct expansion for (3x-y^2)^4

Answers

Answer:

81x4^ + 108x^3y^2 + 54x^2y^4 +12xy^6 +y^8

Step-by-step explanation:

guys 100 points. What is the formula of a cube?

Answers

The formula of the cube is L x W x H

Answer:

L x W x H                                            

Yeet

:3

in 1900, greenville had a population of 4000 people. Greenville's population increased by 100 people each year. Springfield had a population of 1000 people. Springfields population increased bu 4% each year. In what year were the populations about equal?

Answers

Answer: year 1948

Step-by-step explanation:

1900 is our t = 0

The population of Greenville can be written as:

G = 4000 + 100*t

the equation for Springfield can be written as:

S = 1000*(1.04)^t

we want to find the value of t that makes S(t) = G(t)

4000 + 100*t = 1000*(1.04)^t

(4000 + 100*t) = 1.04^t

4 + 0.1*t = 1.04^t

now, you can graph both of this equations (left side and right side) and see in wich value of t the graphs intersect eachother, or you also may use different values of t until the values are about the same for both sides, which is the thing i did with the equation:

4 = 1.04^t - 0.1*t

You will find that the correct value is t = 48

So we can assume that in year 1948 the populations will be about the same.

20 points . Find the geometric mean of 5/4 and 80

Answers

Answer:

3.636478334

Step-by-step explanation:

A school ordered 32 orange shirts, 29 blue shirts, and 34 green shirts. The shirts are being divided equally among 6
classrooms. If each classroom gets the same number of shirts, how many shirts will be left over?
A. 5
B. 3
C. 4
D. 2

Answers

Answer:

5

Step-by-step explanation:

32+29+34= 95 total shirts

95/6=15.8333 round down

If each group get 15 shirts you need 90 shirts (15*6=90)

and so you will have 5 left over (95-90=5)

Answer:

There will be 5 shirts that were left over

Which of the following relations are NOT functions? Select all that apply.*
(1,3), (3,7), (5,11), (7,15), (9,19)
(1,3), (1,7), (5,11), (5,15), (9,19)
(-2,4), (-1,1),(0,0), (1,1), (2,4)
(2,4), (1,1),(0,0), (1,-1), (2,-4)
(6,3), (4,1), (2,1),(0,-1), (-2,-3)
(1,3), (3,11), (3,7), (7,15), (9,19)
O (1,3), (3,7), (5,11), (9,15), (9,19)

Answers

Answer:

Going from 1 to 7. The not functions are 2,4,6, and 7

Step-by-step explanation:

How you can determine if its a function is if all x values are different. Vertical line test.

Using the function concept, it is found that these following relations are not functions:

(1,3), (1,7), (5,11), (5,15), (9,19)

(2,4), (1,1),(0,0), (1,-1), (2,-4)

(1,3), (3,11), (3,7), (7,15), (9,19)

(1,3), (3,7), (5,11), (9,15), (9,19)

A relation is a function if one input is mapped to only one output.

In the relation (1,3), (1,7), (5,11), (5,15), (9,19), the input 1 is mapped to the output 3 and to the output 7, so it is not a function.In the relation (2,4), (1,1),(0,0), (1,-1), (2,-4), the inputs 2 and 1 are mapped to multiple outputs, so it is not a function.In the relation (1,3), (3,11), (3,7), (7,15), (9,19), the input 3 is mapped to the outputs 11 and 7, so it is not a function.In the relation (1,3), (3,7), (5,11), (9,15), (9,19), the input 9 is mapped to the outputs 15 and 19, so it is not a function.

A similar problem is given at https://brainly.com/question/12463448

The price of gasoline was 96¢ a gallon
before it went up 25%. How much did
it go up?

Answers

it went up 24c because 25% of 96c is 24c

find the volume of this composite space figure express your answers in terms of pi
edit: its (2880 + 180pi) in^3 for anyone who has the same question!!

Answers

Answer:

The Answer is (2880+180π) in. cubed

Step-by-step explanation:

I got it right in Gradpoint

the quotient of 4 and the number plus 17 is 5

Answers

Answer:

-1/3

Step-by-step explanation:

I am assuming you mean 4/x + 17 = 5

Can anyone help me out

Answers

Answer:

jamilla is not correct because she messed up. She is WRONG. and the reason is because she didnt add and divide properlly

Step-by-step explanation:

Given that ACDE, CBFG, and ABIH are squares and the side of the equilateral △ABC is 1 in. Find the square of the value of the shaded area.

Answers

Answer:

  6.75

Step-by-step explanation:

The shaded area amounts to two congruent equilateral triangles. Each has a side length of 2(1 in)cos(30°) = √3 in.

The height of an equilateral triangle with side length √3 is ...

  height = (√3 in)sin(60°) = 3/2 in

Then the area of the two equilateral triangles is ...

  A = bh = (√3 in)(3/2 in) = 3√3/2 in^2

The square of the numerical value of the area is ...

  A^2 = ((3/2)(√3))^2 = 27/4 = 6.75

The square of the shaded area is 6.75.

Find the missing angles and sides

Answers

Step-by-step explanation:

m∠1 = 180-100 = 80

m∠2 = 180-150 = 30

m∠3 = 180-(80+30) = 180 - 110 = 70

using the law of sine :

AC/sin(m∠2) = 5/sin(m∠3) ⇒ AC = sin(m∠2)*(5/sin(m∠3)) = sin(30)×(5÷sin(70))

=2.66044443119

CB/sin(m∠1) = 5/sin(m∠3) ⇒ CB = sin(m∠1)*(5/sin(m∠3)) ⇒ CB = sin(80)×(5÷sin(70)) = 5.240052604588

There are 57 ounces of cereal in 5 boxes. At this rate, how many ounces of cereal are in 8 boxes?

Answers

Answer:

91.2

Step-by-step explanation:

If there is 57 ounces in 5 boxes and you divide 57 by 5 you'll get 11.4. After that you should times 11.4 by 8 to get 91.2 ounces

Answer:

91.2 ounces

Step-by-step explanation:

Let's make a proportion using this setup:

ounces/boxes=ounces/boxes

There are 57 ounces in 5 boxes, and x ounces in 8 boxes.

57 ounces/5 boxes= x ounces/8 boxes

57/5=x/8

Now we have to solve for x. x and 8 are being divided. To undo this, multiply both sides by 8, because multiplication is the opposite of division.

8*57/5=x/8*8

The 8s on the right will cancel, so we are left with:

8*57/5=x

8*11.4=x

91.2=x

There are 91.2 ounces in 8 boxes

A salesman made a trip of 420 miles by bus and train. He traveled 3 hours by bus and 5 hours by train. If the train averaged 12 mph more than the bus, find the rate of each.

Answers

Answer:

The speed at which the buss made the trip was 45 mph and the train was 57 mph.

Step-by-step explanation:

The average speed is given by:

speed = distance / time

Therefore we can manipulate it to give us the distance:

distance = speed*time

The time distance of each stage of his trip summed must be equal to the total distance of the trip. Since he made a trip in two legs, one by bus that lasted 3 h at a speed of "x" and one that lasted 5 hours at a speed of "x + 12". We have:

420 = 3*x + 5*(x + 12)

3*x + 5*(x + 12) = 420

3*x + 5*x + 60 = 420

8*x = 420 - 60

8*x = 360

x = 45 mph

The speed at which the buss made the trip was 45 mph and the train was 57 mph.

Answer:

45 mph

Step-by-step explanation:

PLEASE HELP?!?!
Sorry for all the questions but PLEASE HELP!!!
What is the scale factor for this dilation? Please show your work

Answers

Answer:

Dilation factor is 2/3

Step-by-step explanation:

Look at both flat lines (M to S and M' to S') and find their lengths.

M to S = 9 units

M' to S' = 6 units

The triangle has gotten smaller so the dilation factor is a fraction

new/original = 6/9 = .66666666 or 2/3

Dilation factor is 2/3

which expressions are equal to 10^5? select all answers

Answers

Answer: 10*10*10*10*10

Step-by-step explanation:

Find the mean absolute deviation for the set below.

104, 86, 357, 532, 70, 93, 260, 89, 171, 429

Answers

Answer:

430

Step-by-step explanation:

Answer: 430

Step-by-step explanation:

Help asap . thank youu

Answers

Answer:

It is not a linear function

Step-by-step explanation:

There is a one to one correspondence and this would pass the vertical line test

This is a function

However, the questions asks if it is a linear function, which would mean is it a straight line.

This curves, so it is not a linear function

solve for x and y...............​

Answers

Answer:

9. [tex]x=30, y=10\sqrt{3}[/tex]

11. [tex]x=5\sqrt{3}, y=10\sqrt{3}[/tex]

Step-by-step explanation:

9)

[tex]\sin x=\dfrac{10}{20}\\x=\sin^{-1}\left( \dfrac{1}{2} \right)=30^{\circ}\\y=\sqrt{20^2-10^2}=\sqrt{400-100}=\sqrt{300}=10\sqrt{3}[/tex]

11)

[tex]\tan 60= \dfrac{15}{x}\\x=\dfrac{15}{\tan 60}=5\sqrt{3}\\y=\sqrt{(5\sqrt{3})^2+15^2}=\sqrt{75+225}=\sqrt{300}=10\sqrt{3}[/tex]

Hope this helps!

Answer:

9 for x..................

will mark bianleast 10 pontis
Which equation could be used to find the perimeter of a rectangle that has a width of 10 inches and a length of 20 inches?

P = 2·10 + 2·10

P = 20·10

P = 2·20 + 2·10

P = 10 + 20

Answers

Answer:

P = 2·20 + 2·10

Step-by-step explanation:

there are 2 sides for width, and 2 sides for length, as easy as

Plz lzplz plz plz plz help me plz ASAP

Answers

i think it is 4

hope this helps

A.) $405.00
B.) $472.00
C.) $450.00
D.) $495.00

A satellite TV company is running a promotion to attract new customers. The first full month is free, and each additional month is $45. Any partial month is ignored. If a family purchased satellite TV service November 1st of one year and continued it through September 15th of the next year, what did the family pay?

Answers

$450 since first month was free if it wasn’t free it would’ve been $495

can someone show how to do this please

Answers

Answer:

77 units^2

Step-by-step explanation:

I'm going to call the red square A, green square B, blue square C.

A side of a square is the square root of the area.

The Pythagorean Theorem is A^2 + B^2 =C^2.

So in other words,  

33 + 44 = the side of square C^2.

33+44=77

One side of square C is √77.

Square this to get the area.

Square C's area is 77 units^2.

What is the slope of the line y = 8?

Answers

Answer:

the slope of the line y=8 is 0

Step-by-step explanation:

0

im braindead, i dont know.

Answers

Answer:

-8-(-11)-7= -4

B

Plug it in. Hope this helped!

Evaluate piecewise functions
Pls answer

Answers

Answer:

-23

Step-by-step explanation:

x = -5 lies in the last piece

h(-5) = 4(-5) - 3

= -20 - 3

= -23

Step-by-step explanation:

Step 1:  Find which piece-wise function it is in

Equation 1 → x < -7

Let x = -5 → (-5) < -7 ← False

Equation 2 → -7 ≤ x < -5

Let x = -5 → -7 ≤ (-5) < -5 ← False

Equation 3 → x ≥ -5

Let x = -5 → (-5) ≥ -5 ← True

Step 2:  Find the value of h(-5)

[tex]h(-5) = 4x - 3[/tex]

[tex]h(-5) = 4(-5) - 3[/tex]

[tex]h(-5) = -20 - 3[/tex]

[tex]h(-5) = -23[/tex]

Answer:  [tex]h(-5) = -23[/tex]

Please help multiple-choice image below with question!

Answers

Answer:

No

Step-by-step explanation:Figure B Is not a scale copy of Figure A because the line on the right for figure A  has only 5 squares And Square B has 10 Squares

:))

Answer:

no

Step-by-step explanation:

To be a scale copy the image has to be scale by the same amount in the x direction and the y direction

The size in the x direction did not change but the y direction did change so

Which expression is equivalent to (5 Superscript negative 2 Baseline) (5 Superscript negative 1 Baseline)? { answer is C }

Answers

Answer:

[tex]\frac{1}{125}[/tex]

Step-by-step explanation:

The given expression is

[tex](5^{-2}) (5^{-1})[/tex]

The expression is about two powers with the same base, so we can use the power property of multiplication, which states that we must proceed we writing only one base and sum exponents

[tex](5^{-2}) (5^{-1})=5^{-2-1}=5^{-3}[/tex]

Then, we use the negative exponent property

[tex]5^{-3}=\frac{1}{5^{3} }[/tex]

Finally, we solve the power

[tex]\frac{1}{5^{3} }=\frac{1}{125}[/tex]

Therefore, the given expression is equivalen to [tex]\frac{1}{125}[/tex].

Answer:

the answer is C

Step-by-step explanation:

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