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?

Answer:

its A beacuse

Step-by-step explanation:

Simplifying

41n(7x) = 8

Remove parenthesis around (7x)

41n * 7x = 8

Reorder the terms for easier multiplication:

41 * 7n * x = 8

Multiply 41 * 7

287n * x = 8

Multiply n * x

287nx = 8

Solving

287nx = 8

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Divide each side by '287x'.

n = 0.02787456446x-1

Simplifying

n = 0.02787456446x-1

The choice that matches the graph of the function as is defined to Graph A.

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

A graph contains data of which input maps to which output.

Analysis of this leads to the relations which were used to make it.

The given function are;

f(x)= 2 ,if 2 < x ≤ 4

f(x)= 4, if 4 < x ≤ 6

f(x)= 6  ,if 6 < x ≤ 8

This means that how we get the staircase pattern as shown in graph A. This is considered a piecewise function since we're graphing pieces of various other functions.

Hence, the choice that matches the graph of the function as is defined to Graph A.

To learn more on Graph click:

https://brainly.com/question/17267403

#SPJ5

answer: x < 8

Step-by-step explanation: the inequailty is 100 + 7.55x < 160 if you subtract 100 on both sides you get 7.55x < 60 divide 7.55 you should get 7.947 which rounds up to 8 so your answer would be x < 8

Answer:

this is an obtuse angle

Step-by-step explanation:

a picture for proof

Answer:

  not a right triangle

Step-by-step explanation:

The side lengths do not meet the requirements of the Triangle Inequality. The given figure is not even a triangle.

_____

Additional comment

The triangle inequality requires the sum of the two short sides exceed the long side:

  3 + 9 > 12 . . . . not true

__

The converse of the Pythagorean theorem tells you that the triangle is a right triangle if the sum of the squares of the short sides is equal to the square of the long side: 3² +9² = 12² (not true). Here, that criterion is not met, so the triangle is not a right triangle.

Answer:

you'd land on A 3 times, on B 4 times, C 5 times

Step-by-step explanation:

you simply have to divide 12 by each of the values

so basically:

A= 12 : 4

B= 12 : 3

C= Well it's 5 out of 12 so the answers already there

Answer:

he can use a random sample or a random number generator which is a tool for making or generating numbers with no pattern to make a good representative of that population but it can be more if you want. He can also choose three people or more by asking them to raise their hand who wants to be a volunteer and do not raise their hand if they dont want. So hopefully those are the two ways.

Step-by-step explanation: Sorry if i get it wrong but i tried my best i had.

Answer:

580 metre square

Step-by-step explanation:

Surface area of prism = surface area of two triangles + surface area of two rectangles

[tex]2( \frac{1}{2} \times 15 \times 16) + 2(10 \times 17)[/tex]

Answer:

She can buy 5 folders filled with paper

Step-by-step explanation:

Answer:

k&F 20 degrees

Step-by-step explanation:

hope it helps

Answer:

absolute devlation is

1, 1 + 5+9,4+1, 2+8,1+4,3

Step-by-step explanation:

=4,9

95,5 -> 105 3

have a nice day

Answer: 3: 50.24

Step-by-step explanation: 3: because to find the circumferrence you would do 3.14×8 the radius 25.12×2= 50.24, now with that try the other 2

Answer:

It's 50,000 times bigger.

Step-by-step explanation:

3×10¹⁵ ÷ 6×10¹⁰ = (3 ÷ 6)×(10¹⁵÷10¹⁰) = 0.5×10¹⁵⁻¹⁰ = (5×10⁻¹)×10⁵ = 5×10⁻¹⁺⁵ = 5×10⁴ It is 5×10⁴ (= 50,000) times bigger.

Answer:

4. 30 ft

5. 4m

6. 32 mm

Step-by-step explanation:

Diameter = 2(radius)

Since they give the radius in all of them, you multiply the radius by 2 for all.

4. 15 * 2 = 30 ft

5. 2 * 2 = 4 m

6. 16 * 2 = 32 mm

Answer:

4. 30 ft          5. 4m      6. 32 mm

Step-by-step explanation:

Answer:

if every step is 1/4 then sub out other numbers

Step-by-step explanation:

i hope that helps

Answer:

51.75 in ^3

Step-by-step explanation:

l * w * h  = volume of cube

16* 1/4   *    9 * 1/4    *   23 * 1/4 = volume

   4        *       9/4     *     23/4   = 51.75 in^3

Answer:

11.58000

Step-by-step explanation:

Answer:

4.28

Hope This Helps! :)

Answer:

I think it would be 120

Step-by-step explanation:

6x10x2=120

how many brownies are there

Answer/Step-by-step explanation:

From the first attachment or we can also say:

https://brainly.com/question/27391854

Base on first attachment:

There are 12 people ⇒ Emily, Delvenal, 10 other friends that was suppose to come

Either :

cut the pan of brownies into the 12 pieces

cut the pan of brownies into 24 pieces

But from this second attachment we know that:

Out of the 10 friend that war suppose to come only 7 came.

Thus if they cut the pan of brownies into 12 pieces then

Emily and delvenal + 7 friend = 10 people

12 - 10 = 2

Hence, 2 pieces of brownies are left.

Thus, if they cut the pan of brownies into 24 pieces then

Emily and delvenal + 7 friend = 10 people

24 - 10 = 14

Hence, 14 pieces of brownies are left.

Kavinsky

Answer:

That answer is 2

Step-by-step explanation:

1 cookie plus another is 2

Answer:

13/18

Step-by-step explanation:

im a math teacher at k12 online school

Explanation:

1) Draw a table

+      1       2      3      4      5      6

1     2      3      4      5      6      7

2     3      4      5      6      7      8

3      4      5      6      7      8      9

4      5      6      7      8      9      10

5     6      7      8      9      10      11

6      7      8      9      10      11       12

2) Then you count how many are above 5 (not in bold). I got 26, so this will be your numerator.

3) Finally, for the denominator, do 6x6 which is 36.

Answer:

Your answer as a fraction will be 26/36 (if asked to simplify, then it's 13/18)

The height of a cone with a volume and base area of 2,144.7 cubic inches and 201.1 square inches respectively is 32 inches

volume of a cone = 1 / 3 πr²h

where

Therefore,

volume of the cone =  2,144.7 cubic inches

Base area = 201.1 square inches.

πr² = Base area

Therefore,

2144.7  = 1 / 3 × 201.1  × h

6434.1 = 201.1 h

h = 6434.1 / 201.1

h = 31.9945300845

h = 32 inches

learn more on volume here: https://brainly.com/question/16506575

#SPJ2

Answer:

71.43%

Step-by-step explanation:

$77___100%

$55___x=71.43%

$55*100/$77 = 71.43%

Answer

Only 3 cases: 1 2 or 3

prob ( less than 4 ) = 3/36 = 1/12

Step-by-step explanation:

Answer:

The answer is 3/30 or 10%

Step-by-step explanation:

There are 6 numbers: 1, 2, 3, 4, 5, and 6. You can only roll less than 4 3 out of 30 times, so it's 3/30 or 10%.

Answer:

it is 2.4

Step-by-step explanation:

Answer:

SA = π3^2 + π3(7.5)

Step-by-step explanation: r is radius and L

is r*l/2

so 3*5/2=15/2=7.5

seriously look at a problem more carefully and memorise your formulas!

Answer:

pi*r^2+pi^r^l

Step-by-step explanation:

ik you already got it in the comments but im putting it here for other people so it is quick to get

Answer:

See below ~

Step-by-step explanation:

A)

B)

C)

D)

E)

Answer:

A, B and C are correct

Step-by-step explanation:

[tex](-a)(b)=-ab[/tex]

[tex](-a)(-b)=ab[/tex]

[tex]\sf A) \quad 3(-18)(5)=3(-90)=-270[/tex]

[tex]\sf B) \quad (-7)(-3)(10)=7 \cdot 3 (10)=21(10)=210[/tex]

[tex]\sf C) \quad (4)(-25)(-10)=(4)(25 \cdot 10)=(4)(250)=1000[/tex]

[tex]\sf D) \quad (-3)(-5)(8)=(3 \cdot 5)(8)=(15)(8)=120[/tex]

[tex]\sf E) \quad (-10)(-10)(-10)=(10 \cdot 10)(-10)=(100)(-10)=-1000[/tex]

Answer:

[tex]\textsf{C)}\quad 3x-45=10[/tex]

Step-by-step explanation:

Given equation:

[tex]\dfrac15x-3=\dfrac23[/tex]

Multiply both sides by 3:

[tex]\implies 3\left(\dfrac15x-3\right)=\dfrac23 \cdot 3[/tex]

[tex]\implies \dfrac{3 \cdot 1}{5}x-3 \cdot 3=\dfrac{2 \cdot 3}{3}[/tex]

[tex]\implies \dfrac35x-9=2[/tex]

Multiply both sides by 5:

[tex]\implies 5\left(\dfrac35x-9\right)=2 \cdot 5[/tex]

[tex]\implies \dfrac{5 \cdot 3}{5}x-5 \cdot 9=10[/tex]

[tex]\implies 3x-45=10[/tex]