Please help
A researcher posts a radio advertisement offering $35 in exchange for participation in a short study. The researcher accepts the first eight people who respond to the advertisement. Which of the following statements is true about the sample? (5 points) It is a valid sample because the first eight people were selected to participate. It is not a valid sample because it is not a random sample of the population. It is a valid sample because money was offered to participants. It is not a valid sample because it is only a short study.

Answers

Answer 1

Answer:

the answer is b

Step-by-step explanation:


Related Questions

11=w+3–solving equations

Answers

Answer:

w = 8

Step-by-step explanation:

11 = w + 3

11 -3 = 8

Answer:

w=8

Step-by-step explanation:

the local frozen yogurt store has two different containers for customers to use micheal chooses the container below the second container is a rectangular prism and holds three times as much yogurt as the container micheal chose

Answers

Answer:

The answer is "C"

Step-by-step explanation:

4 x 4 x 4.7 = 75.2

which is closes to:

72

Which is:

three times as much yogurt as the container Michael chose

Because the original number is:

24

Your welcome.

if 5 more than n is 12, what is n?

Answers

Answer:

n = 7

Step-by-step explanation:

subtract 5 from 12

Answer: n=7

Step-by-step explanation:

“5 more than n” simply means n+5

n+5=12, subtract 5 from both sides. n= 7

ASAP!!! are 7n - 2 and 2 - 7n equal? PLEASE EXPLAIN

Answers

Answer: No.

Step-by-step explanation:

They aren't equal because using the order of operations, the two in 7n-2 is subtracted from 7n. In 2-7n, they are subtracting 7n from 2, which would give a totally different answer.

Answer:

no they are not the same or equal. this is because the first part of the expression 2 is the number that is negative while 7n is positive. in the second half of the expression 2 is positive and 7n is negative.

Step-by-step explanation:

i hope this helps :)

17. Macro mineral needed to build strong bones and teeth
A- iron
B -calcium
18. Bodies inability to break down lactose due to absence of the enzyme lactase
A- Lactose Intolerant
B- Celiac Disease

Please HELP ME ITS DUE LIKE RN

Answers

Answer:

b

Step-by-step explanation:

b because its just the only stand out answer

According to the article, "How Can Your Smartphone Make Water Safe to Drink," less than 1% of phone's battery disinfects how much water? *

Answers

Answer:

700 A

Step-by-step explanation:

if see ujbvcddfgyggcs456ujhvcddrtuijjjnbbbgc

What is 40% of $67.20

Answers

Answer:

I believe it's 26.88$ :) Please correct me if I'm wrong

Step-by-step explanation:

67.20$ multiplied by 0.4

Answer:

26.88 is the answer

Step-by-step explanation:

67.20/100=0.672=1%

40*0.672=26.88

In a 30-60-90 triangle, the long leg is 60, what is the short leg

Answers

Answer:

The shorter leg, which is opposite to the 30- degree angle, is labeled as x. The hypotenuse, which is opposite to the 90-degree angle, is twice the shorter leg length (2x). The longer leg, which is opposite to the 60-degree angle, is equal to the shorter leg's product and the square root of three (x√3).

Step-by-step explanation:

In any 30-60-90 triangle, the shortest leg is across from the 30° angle, the length of the hypotenuse is always double the length of the shortest leg.

help pls this is due today

Answers

Answer:

2 x 1/3

Step-by-step explanation:

There are two bars of 1/3 so that's why it's 2 x 1/3

Answer:

C

Step-by-step explanation:

The model has two sets of bars filled in 1/3 of the way.  so it is 2 ×  1/3

Can someone help quick?

Answers

Answer:

D

Step-by-step explanation:

I need help asap!! will give crown

Answers

Answer:

A. Rectangle

Step-by-step explanation:

Shown in the attachment are the four points graphed on a coordinate plane.

We can see that the opposite sides are parallel to each other and have the same length.

The answer cannot be B. Square because the side lengths of this quadrilateral are not all equal to each other.

The answer cannot be C. Rhombus because of the same reason as above.

The answer cannot be D. Trapezoid because the bases of the quadrilateral are not of different lengths.

Therefore, the answer must be A. Rectangle since the angles are 90° angles, and the opposite sides are parallel and equal.

3. Constance is planning to pay for part of her college using a $12,000 student loan. She is comparing the total costs of two loan options. Option A is to borrow the $12,000 for 5 years at 4.75% annual compound interest. Option B is to borrow the $12,000 for 4 years at 5% annual compound interest. Which of the following is closest to the difference in total cost of Option A compared to Option B?
A $450.00
B $529.87
C $547.84
D $867 72​

Answers

Answer: 450. 00

Step-by-step explanation:

take the percent of each and multiply it by the years. do it for both. and add the 12000. then subtract both from each other and you get 450.

7) Steve buys a new laptop for $729.00. If the sales
tax rate is 9.25%, what is the total cost of the
laptop?
A) $796.43
B) $785.54
C) $774,65
D) $763.76
E) $752.87
Help please ASAP

Answers

it would be A. 796.43

Help? I may have asked this question already ​

Answers

Answer:

yes

Step-by-step explanation:

what is the volume of a sphere if the diameter is 21 cm using formula v=4/3 pie (r3). use 3.14 for pie

Answers

Answer:

4846.59

Step-by-step explanation:

21/2= 10.5 as your radius

10.5^3(3.14)(4/3) = 4846.59

what is the slant height of a pyramid with surface area of 209 square centimeters and a square base with sides of 7 centimeters? round to the nearest tenth.​

Answers

Answer:

Step-by-step explanation:

base b = 7

slant height = L

area of base = 49 cm²

lateral area = surface area - base area = 209 - 49 = 160 cm²

area of one lateral face = 160/4 = 40 cm²

½·b·L = 40

L = 80/7 ≅ 11.4 cm

who lives in florida.

Answers

Answer:

I live in new Mexico:))))

Answer:

Not me, lol

Step-by-step explanation:

I live in Kentucky, but I got a friend that lives in Florida.

Can I have brainliest? I'm tryna level up.

Stay safe and have a wonderful day/night!!!!! :)

Please help me, I am completely lost...

Answers

5 is the answer, you are welcome.

Match each diagram with a description and an equation.

Answers

Graphs such as line and tape diagrams can be used to represent equations.

The equation of the first diagram is y = 0.6x,and it represents a decrease by 0.4 or 2/5The equation of the second diagram is y = 1.83x,and it represents an increase of 5/11 or 0.83

Diagram (a)

In this diagram, all the x boxes (5 boxes) are shaded, while all the y boxes (3) are shaded.

So, the equation is:

[tex]y = \frac{3}{5}x[/tex]

Express as decimal

[tex]y = 0.6x[/tex]

The ratio (0.6) is less than 1.

So, it represents a decrement.

And the decrement (d) is:

[tex]d = 1 - 0.6[/tex]

[tex]d =0.4[/tex]

Diagram (b)

In this diagram, all the x boxes (6 boxes) are shaded, while part of  the y boxes (6 of the 11) are shaded.

So, the equation is:

[tex]y = \frac{11}{6}x[/tex]

Express as decimal

[tex]y = 1.83x[/tex]

The ratio (1.83) is greater than 1.

So, it represents an increment.

And the increment (d) is:

[tex]d = 1.83 - 1[/tex]

[tex]d = 0.83[/tex]

See attachment for the diagrams at:

Read more about diagrams and equations at:

https://brainly.com/question/14323743

Answer:576

Step-by-step explanation:


Please help me - I will give brainlist

Answers

Answer:

File won't load...?

Step-by-step explanation:

Help please I’ll mark brainliest

Answers

Answer:

- [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

One cubic down and 2 cubics to the right

What is the smallest 3-digit number of the form aaa such that it is divisible by 9? (Here, a represents a digit.)

Answers

Answer:

If all three digits need to be the same (I assume that's what aaa means) it's 333

Step-by-step explanation:

For a number XYZ to be divisible by 9, X+Y+Z must be divisible by 9. Here's why:

X*100 + Y * 10 + Z = X + Y + Z + 99*X + 9*Y = X + Y + Z + 9(11X + Y)

So we need to find the smallest a so that a+a+a = 3a is divisible by 9. The smallest would be 0, but 000 is not a real 3-digit number. The next one is 3.

A farmer sells 9.2 kilograms of apples and pears at the farmers market 4/5 of this weight is apples and the rest is pears. How many kilograms of pears did she sell at the farmers market

Answers

9.2 kg of apples and pears combined
4/5 of 9.2 kg are apples
4/5=0.8=80%
100% 9.2 kg
80%. X kg
X= 80 • 9.2/100
X=736/100
X=7.36 kg of apples


9.2kg-7.36kg=1.84 kg of pears

18. What is the equivalent fraction of 8/80?​

Answers

Answer:

1/10

Step-by-step explanation:

8/80

divide numerator and denominator by 8

8÷8=1

80÷8=10

8/80 0.1 10%
hope this helpssssss

I dont understand please help Which expression is equivalent to 8-(6r+2) A -6r+6 B 2r+2 C 6r+10 D -6r+10

Answers

Answer:

-6r+6

Step-by-step explanation:

Given data

We are given the expression

8-(6r+2)

let us expand it by opening the bracket

=8-6r-2

collect like terms

=8-2-6r

=6-6r

rearrange

=-6r+6

Hence option A is correct

6.
Giselle pays $210 in advance on her account at the athletic club. Each time she uses the club, $15 is deducted from the account. Model the situation with a linear function.

A. b = 195 – 15x

B. b = 210 – 15x

C. b = 195 + 15x

D. b = 210 + 15x

Answers

Answer:

B is correct. Your starting amount is 210$ And you're taking away 15$ each time she uses the club,x.

Step-by-step explanation:

Answer:

The linear function model the situation is b = 210 - 15x .

Option (B) is correct .

Step-by-step explanation:

Let us assume that the number of times giselle uses the club be x .

As given

giselle pays $210 in advance on her account at the athletic club.

Each time she uses the club,$15 is deducted from the account.

Let suppose that the money left after giselle uses the club x times is b .

Than the equation becomes

Money left = Amount pay in advance - Deducted amount × Number of times  giselle uses the club .

Put all the values in the above

b = 210 - 15 × x

b = 210 - 15x

Therefore the linear function model the situation is b = 210 - 15x .

Option (B) is correct .

Train travels at 3 hours if it's speed is 65 miles per hour. It takes the train 2.5 hours if it's speed is 78 per hour . Identify the variation type

Answers

Answer: wow Ashley smh it’s Lorelei btw

Step-by-step explanation:

y=-x^2+9
What is the vertex
And how do I graph it

Answers

Answer:

You must know the shape of the graph y = x². Its chart is in the form of an upward parabola. The shape of the graph y = -x² is the same except that it is downward. Finally, to draw the shape of the graph y = -x² + 9, we need to move the previously mentioned graph 9 units upwards.

The formula for the vertex length of a parabolic chart is as follows: x= -b/(2a) b=0 , a= 1 → x= 0, y=-(0)²+9=9

vertex: (0,9)

Need Help With this plz answer fast

Answers

Answer:

well if you would put the question or at least a picture i dont think anyone can help. Try the number 7

Step-by-step explanation:


A rectangle's perimeter and its area have the same numerical value. The width of the rectangle is 3 units. What is
the length of the rectangle in units?

Answers

Answer:

l = 6.00

Step-by-step explanation:

So A = l x w and P = 2l + 2w, they say they are equal to l (w) = 2l + 2w and we know that w = 3 so

3l = 2l + 2(3), so l = 6.

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