Which type of survey does this example represent?

Mariah wants to know how many hours of sleep the population of her K-8 school gets on an average night. She sends an email to every single student email account asking them to fill out a quick survey. After 5 days, she collects the data and calculates the mean.


A. Random Sample

B. Cluster Sample

C. Convenience Sample

D. Voluntary Response Sample

Answers

Answer 1
It is d my good sir

Related Questions

HELP

PLSSSSSSSSSSSSSSSSSSSSSS

Answers

OH SO LIKE CHESTER WAS A REALLY BAD PERSON.

A T.V. is regularly priced at $600, but it is on sale for 20% off. What's the sale price?

Answers

Answer:

$480

Step-by-step explanation:

multiply the normal price $600 by 20 then divide it by one hundred

the discount is $120

the sales price is subracting the discount of $120 from the original price of $600 then get $480 as the sales price.

Answer:

Step-by-step explanation:

Method 1:  Subtract 20% from 100%, obtaining 80%, and then multiply the regular price ($600) by the decimal equivalent 0.80.  We get $480 as the sale price.

Method 2: Calculate the amount of the discount by multiplying $600 by 0.20, obtaining $120.  Then subtract this discount from the regular price, $600, obtaining $480.

Help please

Identify the vertex and the y-intercept of the graph of the function.


y = 0.5(x – 3)²

Answers

Answer:

7

Step-by-step explanation:

X=0 because we want y-intercept

Y=0.5(0-3)^2
Y=0.5(9)

Y=4.5

I hope that answers your question and I’m really sorry if the answer turned out to be wrong but i tried my best!!

Help me please???!!!!!!!

Answers

Answer:

im not sure

go on volume calculator

Step-by-step explanation:

Chang wants to rent a boat and spend at most $44. the boat cost $8 per hour, and chang has a discount coupon for $4 off. what are the possible numbers of hours chain could rent the boat? Use "t" for number of hours .

Answers

8t-4 is less than or equal to 44

t=6

Answer:

6 hours.

Step-by-step explanation:

Here's my work.

Chang only wanted to spend $44, and the boat costs $8/hr. So, the variable would only be 8t, and you would put 44 on the other side.

Then, you'd put -4 on the side with 8t, because you can take off $4.

So, the setup would be;

44 = 8t - 4.

NEED HELP! Will give brainliest!!!

Answers

The picture below shows distributive property.
Hope this helps!

1) 2(x + 7)

2x + 14

2) 8 (x - 3)

8x - 24

3) -4 (y - 6)

-4y + 24

4) -5 (2x + 3)

-10x - 15

The diameter of a strand of rope is 1.2 ×10^-3 inch. The diameter of a strand of floss is 2.0 ×10^-4 inch.
How much longer is the diameter of the strand of rope than the diameter of the strand of floss?
A. 2.0 ×10^-7 inch
B. 1.0 ×10^-7 inch
C. 2.0 ×10^-3 inch
D. 1.0 ×10^-3 inch

Answers

Answer:

D. 1.0 x 10^-3

Step-by-step explanation:

1.2 ×10^-3 = .0012

2.0 ×10^-4 = .0002

.0012

.0002

_______

.0010 = 1.0 x 10^-3

Answer:D

Step-by-step explanation:

Kayden is a stunt driver. One time, during a gig where she escaped from a building about to explode, she drove at a constant speed to get to the safe zone that was 160 meters away. After 3 seconds of driving, she was 85 meters away from the safe zone. Let D(t) denote the distance to the safe zone D (measured in meters) as a function of time t (measured in seconds).
Which of the below formulas is the correct function's formula?
A. D(t) = -25t + 160
B. D(t) = 25t + 160
C. D(t) = -25t - 160
D. D(t) = 25t - 160

Answers

Step-by-step explanation:

A. D(t) = -25t + 160

this is the correct answer because if you substitute 3 you get 85

Does this graph represent a function? Why or why not? Sey A. No, because it fails the vertical line test. B. Yes, because it has two straight lines. C. Yes, because it passes the vertical line test. D. No, because it is not a straight line​

Answers

Answer: it’s A..

Step-by-step explanation:

No, because it fails the vertical line test.

Can 4, 6, and 12 be the measure of the sides of a triangle?
and
Can 6, 15, and 20 be the measure of the sides of a triangle?​

Answers

Answer:

yes they can

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

yes they can............

Solve 5x + 14 = k for x.

Answers

Answer:

x = (k-14)/5

Step-by-step explanation:

5x + 14 = k

Subtract 14 from each side

5x + 14-14 = k-14

5x = k-14

Divide by 5

5x/5 = (k-14)/5

x = (k-14)/5

Answer:

k - 14/5

Step-by-step explanation:

5x + 14 = k

On subtracting 14 on both sides,

5x = k - 14

On dividing by 5 on both sides,

x = k - 14/5

Therefore, the value of x = k-14/5

Hope this helps You

Please mark as the Brainliest

Thank You

simplified, -14xy − (-3xy) is

Answers

Answer:

-11xy

Step-by-step explanation:

-14xy -(-3xy)

multiply the bract first - sign * minus sign is plus sign

-14xy+3xy

since they are like terms u can subtract them.u should subtract them because minus and plus means subtract and we should put minus sign in front of the answer because 14 is the highest number and it's sign is negative .

-11xy

Can someone pls give me the answer to this?

Answers

it would be 10

Step-by-step explanation:

once you solve the problem which should equal up to 3000 then you would divide 30000÷3000 and get the answer of 10

Brainliest goes to whoever answers correctly

Answers

Answer:

1/9

Step-by-step explanation:

6/9 is 1/9th bigger than 5/9

Answer:

B

Step-by-step explanation:

6/9-5/9=1/9

The vertices of quadrilateral LMNP are L(-1 , 7), M(4,9), N(8, -1), and P(3,-3). Using the distance or slope formula(s), determine the most precise classification of LMNP: parallelogram, rectangle, rhombus, or square​

Answers

Answer:

Its a rectangle.

Step-by-step explanation:

After graphing the points, we can quickly figure out it cant be a square.

Then, when we draw the sides, we see it has to be a rectangle, since each side has a perfect 90 degree angle, and the opposite side lengths are parrelel.

Answer:

Step-by-step explanation:

i need help on this assignment

Answers

Given:

A figure of a rectangular prism with length l, width w and height h.

To find:

The surface area of the rectangular prism.

Solution:

The product of twice of the length l and the width w is:

[tex]2\times l\times w=2lw[/tex]          ...(i)

The product of twice of the length l and the height is:

[tex]2\times l\times h=2lh[/tex]           ...(ii)

The product of twice of the width w and the height h is:

[tex]2\times w\times h=2wh[/tex]       ...(iii)

The surface area of the prism is the sum of (i), (ii) and (iii). So, the expression for the surface area is:

[tex]A=2lw+2lh+2wh[/tex]

[tex]A=2(lw+lh+wh)[/tex]

Therefore, the required expression is [tex]2(lw+lh+wh)[/tex].

Complete the steps to simplify ^5 square root of 4 * square root of 2
Rewrite using rational exponents.

Answers

Answer:

2^(2/5) * 2^½ => first option

Step-by-step explanation:

^5√4 * √2 = ^5√2² * √2

= 2^(2/5) * 2^½ => first option

The expression can be written as [tex](4)^\frac{1}{5}\times(2)^\frac{1}{2}[/tex]. The correct option is C.

What is an expression?

The symbol " that expresses a number's root is known as radical, and it is read as x radical n or the nth root of x. The horizontal line that surrounds the number is known as the vinculum, and the number beneath it is known as the radicand. The index or degree is the number n written before the radical.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the expression is ⁵√4 x√2. The expression can be written as:-

E =  ⁵√4 x√2

[tex]E = (4)^\frac{1}{5}\times(2)^\frac{1}{2}[/tex]

To know more about an expression follow

https://brainly.com/question/28519153

#SPJ2

Find the inverse of f(x)

Answers

Answer:

[tex]\huge\boxed{A.\ f^{-1}(x)=\dfrac{x-3}{5}}[/tex]

Step-by-step explanation:

[tex]f(x)=5x+3\to y=5x+3\\\\\text{exchange}\ x\ \text{with}\ y\\\\5y+3=x\\\\\text{solve for}\ y\\\\5y+3=x\qquad|\text{subtract 3 from both sides}\\\\5y+3-3=x-3\\\\5y=x-3\qquad|\text{divide both sides by 5}\\\\\dfrac{5\!\!\!\!\diagup y}{5\!\!\!\!\diagup}=\dfrac{x-3}{5}\\\\y=\dfrac{x-3}{5}\to f^{-1}(x)=\dfrac{x-3}{5}[/tex]

Angle measurements 84 degree help find out what’s the other side degree

Answers

Answer: 84 degrees

Step-by-step explanation: because of corresponding angles

Jaiver bought a new TV for 479.76. He will make equal payments each month for 2 years . Estimate each payment.

Answers

Answer:

$19.99

Step-by-step explanation:

There are 12 months in a year, so in 2 years, there are 24 months.

Find how much each payment will be by dividing the cost by 24:

479.76/24

= 19.99

So, each payment will be $19.99

Help please & Thankyouu if you don’t mind would really appreciate it!

Answers

Answer:

[tex]{ \tt{area = \frac{1}{2}h(a + b) }} \\ = \frac{8}{2} (10 + 15) \\ \\ { \tt{area = 100 \: {cm}^{2} }}[/tex]

Which of the following questions is not statistical?
a) How old are the students in my classroom?
b) What is the height of each person in my class?
c) How old am I?
d) How many letters are in the names of each person in my class

Answers

Answer:

c.

Step-by-step explanation:

A statistical question has more than 1 answer! hope this helps

Answer:

c) How old am I?

Step-by-step explanation:

This question has only one correct answer that doesn't change, making it non-satistical.

PLSS HELP MEEE I NEED HELP

Answers

Answer:

The answer should be A.

Step-by-step explanation:

CAN SOMEONE HELP ME WITH THIS PLEASE AND THANK YOU.

Answers

Answer:

8 17/18

Step-by-step explanation:

3 5/6 + 5 1/9

23/6 + 46/9

161/18

8 17/18

In mixed form.. 8 whole number 17/18

audio
For the canned food drive, 6 students each collected the same number of cans. They collected 48 cans in all. How many cans did each student collect?

Answers

8 cans

48/6=8

since each student collected equal amounts then divide the number of cans by the number of students

Please Help!!!
Determine the range of the following graph:

Answers

Answer:

[-1, 6)

General Formulas and Concepts:

Algebra I

Reading a coordinate plane

Algebra II

Range is the set of y-values that are outputted by function f(x)Interval Notation - [Brackets] denote inclusion and (Parenthesis) denote exclusion

Step-by-step explanation:

According to the graph, our y-values span from -1 to 6. Since -1 is a closed dot, it is inclusive. Since 6 is an open dot, it is exclusive:

Range would then be [-1, 6).

Function p represents the number of people in the library on a Monday as a function of hours since the library opened.
Here is the graph of function p

Answers

Answer:

C (3rd choice)

Step-by-step explanation:

Domain (x-values):

We can see that there is a max number of 14 hours and a min. of 0 hours. This means that the domain is [0, 14]. Note that the domain would be in brackets (as opposed to parentheses) because the values are included in the data set. Since time works on a continuum, it can be reasonably concluded that all values should be included (e.g., 1.5 hours exists). Therefore, we would state that all numbers from 0 to 14 are valid in the domain.

Range (y-values):

We can see that there is a max of 85 people and a min. of 0 people. This means that the range is [0, 85]. Again, since the values 0 and 85 are both included in the data, the range is notated in brackets. Be mindful that there is no such thing as half person, so the range must only include whole numbers. That means this chart acts as a step-function.

Solve the system of equations.

3x – 7y = 5
9y = 5x + 5

Answers

The answer X= -10 y= -5
Hope this is helpful

A cylinder has a volume of 200 cubic centimeters. If the height of the cylinder is 10 centimeters, what is the radius of the cylinder?​

Answers

Answer:

The radius of the cylinder is 2.52 cm.

Step-by-step explanation:

The formula for the volume of a cylinder of radius r and height h is

V = πr²h.  We can solve this for r² by dividing both sides of the equation by πh:

r² = V / (πh)

Then the desired radius is found by taking the square root of this.

r = √{V / [πh]}

                  200 cm^2

Here, r² = ------------------- = 6.37 cm^2

                   3.14(10 cm)

and so r = √6.37 cm^2 = 2.52 cm

The radius of the cylinder is 2.52 cm.

Answer:

radius = 2.52 cm

Step-by-step explanation:

[tex]Volume = \pi r^2 h\\\\200 = \pi r^2 \times 10\\\\\frac{200}{10 \times \pi} = r^2 \\\\6.332 = r^2 \\\\\sqrt{6.332} = r \\\\r = 2.52 \ cm[/tex]

Please help!! I'm in summer school and I can't fail

Answers

Answer: D, (1,3)

Hope this helped

Answer:

b. (0, 1.5)

Step-by-step explanation:

[tex](x_m, y_m) = (\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})\\(3,7)\\(-3,-4)\\3+(-3)/2 , 7+(-4)/2\\(0, 1.5)[/tex]

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