A researcher posts an online advertisement offering $25 in exchange for participation in a short study. The researcher accepts the first 10 people who respond to the advertisement. Which of the following statements is true about the sample? (1 point)

a
It is not a valid sample because it is only a short study.

b
It is a valid sample because money was offered to participants.

c
It is a valid sample because the first 10 people were selected to participate.

d
It is not a valid sample because it is not a random sample of the population.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

The study only consisted of 10 people. 10 people are not enough to come to a concrete conclusion for a project. Hope this helps!!

Answer 2

Answer:

A) It is not a valid sample because it is only a short study.


Related Questions

please help. its for an assignment that is due today.

Answers

Area of isosceles triangle is 7.8235

Height = base/2 x tan 41 = 2.61

Base length = 2 x ( side length of triangle) x cos 41

6= 2 x ( side length of triangle, assume it b ) x 0.754

6= 1.509 x b

b = 6/ 1.509

b= 3.975

Area = 1/2 b x h

= 1/2 x b^2 Sin square theta

= 7.8235


Tell whether the triangle with the given side lengths is a right triangle. 36, 77, 85, true or false

Answers

Answer:

True the triangle is a right triangle.

Step-by-step explanation:

the Pythagorean Theorem states that [tex]a^{2} +b^{2} =c^{2}[/tex]

so,

[tex]85^{2} =7225\\77^{2} =5929\\36^{2} =1296\\5929+1296=7225[/tex]

a submarine starts out at 120 feet below sea level it dives another 175 feet and then rises 228 feet. what is the current depth of the submarine

Answers

67 feet below sea level
120+175=295
295-228=67

what is b
−2.9+ b/0.1 = − 39.9

Answers

Answer:

b = - 1.09

Step-by-step explanation:

- 2.9 + b ÷ 0.1 = - 39.9

- 2.9 + b ÷ 0.1 × 0.1 = - 39.9 × 0.1

- 2.9 + b = - 3.99

- 2.9 + 2.9 + b = - 3.99 + 2.9

b = - 1.09

Answer:

Exact form

b=-37/10

Decimal form

b=-3.7

Mixed Number form

b+-3 7/10

Step-by-step explanation:

-2.9+b/1/10+-39.9

-2.9+10b+-39.9

10b=-39.9+2.9

10b=-37

b=-37/10

NEED HELP ASAPPP PLZ JUST NEED THE ANSWER NOT THE WORK THANK YOU.

Answers

Answer:

C. 2^8 • 2^(2/10) • 2^(4/100)


HELP PLEASE I WILL MARK BRAINLIEST

Answers

Answer:

i beleive its option number 1

Answer:

first graph

Step-by-step explanation:

Given f(x) then f(x) + c is a vertical translation of f(x)

• If c > 0 then a shift up of c units

• If c < 0 then a shift down of c units

Then g(x) = | x | - 4 is the graph of f(x) shifted down by 4 units

This is represented by the first graph on the left

which expressions have value between 1 and 2? choose all that apply.

Answers

Think 1 or the other one

Answer:

its the first, 3rd, and 5th option

Step-by-step explanation:

Dada a função fx=0,15.X+900 , determine a) f(80) b) f(120) c) f(200) d) f(56)

Answers

Answer:

See answers below

Step-by-step explanation:

Given the function:

f(x) = 0.15x + 900

a) f(80) = 0.15(80) + 900

f(80) = 12 +  900

f(80) = 912

b)  f(120) = 0.15(120) + 900

f(120) = 18 +  900

f(120) = 918

c) f(200) = 0.15(200) + 900

f(200) = 30 +  900

f(200) = 930

d)  f(56) = 0.15(56) + 900

f(56) = 8.4 +  900

f(56) = 908.4

Diego has a standard 52 card playing deck, which includes
13 heart cards, 13 spade cards, 13 diamond cards, and 13
club cards. If he draws one card at random, what is the
probability that the card will be a heart?

Answers

Answer:

13/52

Step-by-step explanation:

¿¿ Cuanto es "6 + -7 - (-8) + 4 – 2" ??

Answers

Answer:

9

Step-by-step explanation:

Do it left from right.

[6+-7]-(-8)+4-2

[-1-(-8)]+4-2=[-1+8]+4-2

[7+4]-2

11-2

9

I don't know Spanish/what laugnange you speak sorry.

Jacqui likes to travel to the beach on weekends. She starts at her house, drives d miles, and then spends t hours walking the remaining w miles to get to the beach. Jacqui drives three times as long as she walks during the trip. The equation below represents Jacqui's average speed, a, in miles per hour, when traveling to the beach. a=d+w/3t+t What is the meaning of 3t + t3t+t in the equation above? -The total time that Jacqui spends traveling to the beach -The time that Jacqui spends driving to the beach -The total distance that Jacqui travels to the beach -Jacqui's maximum speed during her trip Jacqui's average speed during one trip to the beach was 3636 miles per hour. If Jacqui drove 70 miles and the entire trip to the beach took her 22 hours, how many miles did she walk to get to the beach?

Answers

Answer:

The answer is below

Step-by-step explanation:

1) Average speed is the ratio of the total distance travelled to the total time taken. Hence it is given by:

Average speed = total distance / total time

Total distance = d miles + w miles

Jacqui drives three times as long as she walks during the trip, hence:

time spent driving = 3t

Total time = 3t + t

Average speed = total distance / total time

a = (d + w) / (3t + t)

2) (3t + t) represents the total time that Jacqui spends traveling to the beach.

3) Given that a = 36 miles per hour, total time = 2 hours

a = total distance / total time

36 miles per hour = total distance / 2 hours

total distance = 72 miles

Total distance = distance walk + distance drove

72 = distance walk + 70

Distance walk = 2 miles

What is the slope of the line passing through the points (-5, -4) and (-1, 6)?

Answers

Step-by-step explanation:

using the formula (y2-y1)/(x2-x1)we plug the numbers In the slop formula (6--4)/(-1--5)= 10/4

Answer:

Step-by-step explanation:

(x1,y1)= (-5,-4)

(x2,y2)=(-1,6)

Distance=√(x2-x1)²+(y2-y1)²

=(-1-5)²+(6-4)²

=(-6)²+(10)²

=36+100

=136 answer,,

therefore, the slope of the line is 136unit

1. Find the value of x to the nearest tenth

A. 19.2
B. 20.8
C. 21.3
D. 19.7

Answers

Answer:

20.8

Step-by-step explanation:

Use the Pythagoras's Theorem

12²-36²=[tex]\frac{x}{2}[/tex]²

144-36=[tex]\frac{x}{2}[/tex]²

108=[tex]\frac{x}{2}[/tex]²

Root both sides

√108=√[tex]\frac{x}{2}[/tex]²

[tex]\frac{x}{2}[/tex]≈10.4

[tex]\frac{x}{2}[/tex]·2=10.4·2

x=20.8

Which input value produces the same output value for the two functions on the graph

Answers

X = 1

Because where the two lines intersect, they have the same x value, one

Answer:

x = 1

Step-by-step explanation:

Look at the graph to see where the lines intersect.

f(1) = 1

g(1) = 1

When x = 1, the output value of both functions is 1.

Answer: x = 1

help guys pls i beg u cannot do the math this so hard someone help ☺️☺️☺️☺️☺️☺️☺️☺️

Answers

200= 13.5xV+65
200 because that’s what she needs to equal. Then multiple 13.5 by V because you are accounting for how many times she visits and how many points she will get per visit. Then you add 65 because she already has that amount from signing up.
V >= (200 - 65) / 13.5
V >= 10

5. The property depicted in the expression 2/( 3) ×(1/3+ 4/5)=(2/3 × 1/3)+(2/3 × 4/5) is *
associative property of addition
associative property of multiplication
distributive property of multiplication
closure property of multiplication

Answers

Answer:

distributive property of multiplication over addition

Step-by-step explanation:

a(b + c) = ab + ac

The a to the left of the parentheses multiplies both numbers inside the parentheses. The you add the products.

This is the distributive property of multiplication over addition.

2/3 × (1/3 + 4/5) = (2/3 × 1/3) + (2/3 × 4/5)

The 2/3 to the left of the parentheses multiplies both numbers inside the parentheses. The you add the products.

This is the distributive property of multiplication over addition.

State if triangles HAG and CAB are similar and why.

Answers

i think the answer is they are similar by SSS, but they are definitely similar

What is the volume of the prism?

Answers

Answer:

[tex]volume \: of \: the \: prism = 4 \frac{1}{2} \times 2 \ \frac{1}{2} \times 6 \\ = \frac{9}{2} \times \frac{5}{2} \times 6 \\ = 67.5 {cm}^{3} [/tex]

Can someone please help me

Answers

Answer:

the value of x + y is 250

Step-by-step explanation:

I hope it helps u

Which of the following is equivalent to 5(4-m)-2(m+3)? *

don’t give me that link .

Answers

[tex]\longrightarrow{\green{Option\:1.\:(14\:-\:7m)}}[/tex] 

[tex]\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}[/tex]

[tex]5 \: (4 - m) - 2 \: (m + 3) \\ \\ = 20 - 5m - 2m - 6[/tex]

Combining like terms, we have

[tex] = 20 - 6 - 5m - 2m \\ \\ = 14 - 7m[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}[/tex]

The length of a box is 6 inches, the width is 4 inches and the height is 2/8 inches. What is the volume of the box?

Answers

Answer:

6 cubic inches

Step-by-step explanation:

To find the volume of a box you do Length * Width * Height

So we can do:

6*4*2/8

=24*2/8

=6

The volume of the box is 6 cubic inches

•Sequences and functions
( 10 points )
Please help me loves with the answer and understanding

•Please actually help me out I want to better understand this

•trolls will be reported

Answers

the answer is D

when it comes to geometric progression the common ratio (r) must be the same.

to find r, use this formula :

r = T2/T1

= 12/72 = 1/6

= 2/12 = 1/6

On a coordinate plane, 4 lines are shown. Line L M goes through (negative 5, negative 3) and (0, 3). Line N O goes through (negative 6, negative 5) and (0, 0). Line J K goes through (negative 6, 1) and (0, negative 4). Line P Q goes through (negative 5, 4) and (0, negative 2).
Which line is perpendicular to a line that has a slope of Negative five-sixths?

Answers

Answer:

The slope of line LM is perpendicular to the given line.

Step-by-step explanation:

L (- 5, - 3), M (0, 3)

N (- 6, - 5) , O (0, 0)

J (- 6, 1) , K (0, - 4)

Slope of given line = -5/6

Slope of perpendicular line = 6/5

Slope of line LM

[tex]\frac{3 + 3}{0 + 5}=\frac{6}{5}[/tex]

Slope of line NO

[tex]\frac{0+5}{0+6}=\frac{5}{6}[/tex]

Slope of line JK

[tex]\frac{-4-1}{0+6}=\frac{-5}{6}[/tex]

Answer: LM is the correct answer

Step-by-step explanation: Just took the test

hi, i know this is basic math and stuff but I still need some help​

Answers

Answer:

the answer is :

20 for the first figure

12 for the second figure

30 for the last figure

Answers:

Perimeter = 22 cmPerimeter = 22 cmPerimeter = 30 cm

==============================================

Explanation:

The perimeter is the total distance around the outer edge of the figure. It's the total amount of fence you need to enclose the region.

So we simply add up all the side lengths. Refer to the diagram to see any missing sides that aren't labeled (shown in blue).

For instance, the perimeter for problem 1 is 5+2+2.5+4+2.5+6 = 22 cm. Problems 2 and 3 are handled the same way.

It's not a typo that the perimeters of problems 1 and 2 are the same value. This is because both figures can be surrounded by a rectangle that is 6 cm across and 5 cm tall. The perimeter of the surrounding rectangle is exactly the same as the perimeter of the inner fenced region. We're effectively just moving fence around but not changing the perimeter.

in a group of 120 students,90 students study mathematics and 72 study science. if 10 of the student does not study any subject
1)find the no.of students who study atleast 1 subject
2)number of students studying both subjects
3)how many students will study mathematics only?
4)how many students will study science only?

Answers

Answer:

Step-by-step explanation:

Total students = 120

Number of students studying Mathematics P(A) = 90

Number of students studying Science P(B) = 72

Number of students who doesn't study both subjects P(AUB)'= 10

1) Number of students studying atleast on subject = 120 -10 = 110

2) Number of students studying both math and science = (90 +72) -110

                     = 162 -110 = 52

3) Number of students studying only mathematics = 90 -52 = 38

4) Number of students studying only science = 72 -52 = 20

A gum ball machine has 6 red gum balls, 3 green gum balls, and 5 blue gum balls. What is the probability that the next gum ball that comes out will be red?

Answers

Answer:

Step-by-step explanation:

P(red gum ball)= 6/14=3/7

6/14 can be simplified to 3/7 by dividing by 2. 6/2=3. 14/2=7.

P(red gum ball)=3/7

x y
-2 -5
-1 -2
0 1
1 4
2 7

Which equation could represent the data in the table?

y = 3x + 1

y = -3x + 1

y = -3x - 1

y = x - 3

Answers

Answer:

y+3x+1

Step-by-step explanation:

Which inequality represents “six times a number is less than negative
6x >-39
4
6 + x>-39
6x < -39
4
6x5-393
4

Answers

Answer:

6x < - 39 3/4

Step-by-step explanation:

Work out the base of a square with area,
A
= 64cm2.

Answers

Answer:

32

Step-by-step explanation:

because 64 divided by 2 is 32

if the sub total is 5.00 and tax is 5% how much is tax

Answers

Answer:

$0.25

Step-by-step explanation:

So total of 5.25 after tax Sorry if i am wrong am pretty sure this is correct.

Other Questions
HELP PLEASE ASAPwill get the brainliestWhat do the dots above the repeated notes in measure 18 mean? In the digital media process, what is one of the differences between the plan/design stage and the create/develop stage?A) Scripts, storyboards, and flowcharts are created in the plan/design stage, and utilized in the create/develop stage.B) Scripts, storyboards, and flowcharts are involved with the plan/design stage, but not with the create/develop stage.C) Scripts, storyboards, and flowcharts are involved with the create/develop stage, but not with the plan/design stage.D) Scripts, storyboards, and flowcharts are created in the create/develop stage, and utilized in the plan/design stage. the female cook A. el cocinero B. la mesera C. el mesero D. la cocinera please evaluate 18-183-5 A student uses an indicator to measure the pH of a solution. The indicator shows a pH of 7. What must be true of this solution? Explain how geographic factors impacted the early river valley civilization. Complete the sentences with the appropriate preposition and pronoun:1: Maana salgo ___. (with you, plural informal)2: Podemos celebrar una fiesta ___. (with you, singular familiar)3: No me gusta estar ___. (between them, feminine) Which late eighteenth century events were influenced by the ideas of the Enlightenment?Which late eighteenth century documents were influenced by the Enlightenment? Why do you think species need to adapt and change? What is the coefficient for the variable d While washing her hair, Olivia noticed that she was losing a lot of hair. She visited a clinic, and the physician reassured her that her hair would grow back. How do you think Olivias hair will grow back?A. The hair will grow back by undergoing regeneration.B. The hair will grow back by undergoing meiosis.C. The hair will grow back by undergoing binary fission.D. The hair will grow back by undergoing mitosis. can someone help me on this please How does light energy work Unit Test Unit Test Review Active 6 8 9 5 7 10 3 4 1 N A direct variation function contains the points (-9, -3) and (-12, 4). Which equation represents the function? O y = -3x 3 O y=- o y= 2/3 O y = 3x 4. Explain the causes of the American entrance into World War I. What is the total distance that two people travel in 2 h if one of them is riding a bike at 20 mi/h and the other is walking at 3 mi/h? Someone help me with this please Make the scale balanced. Ill give brainliest This uses toner or ink while printing on paper or such a surface