Identify the problem with the following study.An internet poll on a website asks people to indicate whether or not they have a cable TV subscription. 1974 people respond with 847 indicating that they do have a cable TV subscription.

precise numbers

correlation and causality

nonresponse

voluntary response

Answers

Answer 1

Answer: I think the problem with the following study is the precise numbers.

Though an exact number of correspondents responded to the internet poll survey, the fact that the poll was conducted through the internet means that there is a possibility that these responses came from all over the world. It is not limited to a specific area.

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Tiffany is 34 years old and Vanessa is 6 years old. How many years will it take until Tiffany is only 3 times as old as Vanessa?
I can't figure this outthis question was on my exam and I got it completely wrong (I have a graphing calculator capble of matrices so yo don't have to solve the system of equations by hand, use rref (reduced row echelon form))values of a, b, and c and the equation of the graph of the parabola y=ax^2+bx+csuch that is passes through the points (2,-15) (-5,-29) (-3,5) rewrite it in the form (x-h)^2=4P(y-k) show all workif I were to sub the points in I would ge(2,-15): -15=4a+2b+c (-5,-29): -29=25a-5b+c (-3,5): 5=9a-3b+cthen solve for a, b and c I don't know how to solve, please help(if I don't undestand your answer, I will either report or ask you to explain more)
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What is the factored form of the polynomial?x2 + 9x +20 (x − 4)(x − 5) (x − 2)(x − 10) (x + 4)(x + 5) (x + 2)(x + 10)

a spherical fountain il has a radius of 1.5 feet. find the volume of the fountain to the nearest tenth of a cubic foot

Answers

The volume of a sphere is given by the formula V = (4/3)πr^3, where r is the radius of the sphere.

Substituting the given value of r = 1.5 feet, we get:

V = (4/3)π(1.5)^3

V ≈ 14.1 cubic feet (rounded to the nearest tenth)

Therefore, the volume of the spherical fountain is approximately 14.1 cubic feet.

the length of a garden is 4 m longer than the width. if the area of the garden is 196m^2, find the width of the garden.

Answers

l = 4 + w
w = w
A = 196 m^2

A = lw
A= (4+w)w
196 = w^2 +4w

w^2 + 4w - 196 = 0

The quadratic roots (or zeros) of the function are 12 and -16.

Since -16 does not make sense as a measure of width, then 12 is the answer.

The current temperature in Smalltown is 27 °F. This is 5 degrees less than twice the temperature that it was six hours ago. What was the temperature in Smalltown six hours ago?

Answers

Answer:

16° F.

Step-by-step explanation:

Given:

The current temperature in Small town is 27 °F.

This is 5 degrees less than twice the temperature that it was six hours ago.

Question asked

What was the temperature in Small town six hours ago?

Solution:

Let the temperature in Small town six hours ago was $x$

As given that the current temperature in Small town is 27 °F and this is 5 degrees less than twice the temperature of six hours ago, the equation will be:-

27 °F = 5 degrees less than twice the temperature of six hours ago

27 °F = $2x-5$ °

Adding both sides by 5

$27+5=2x-5+5\n32=2x$

Dividing both sides by 2

$(32)/(2) =(2x)/(2) \n16=x$

Thus, the temperature in Small town six hours ago was 16° F.

What equation models the data in the table if d = number of days and c = cost?Days
Cost
2
16
3
24
5
40
6
48

d = 8c
c = d + 8
c = d + 8d
c = 8d

Answers

Answer:

Correct option is:

c=8d

Step-by-step explanation:

Days Cost

2 16=2×8

3 24=3×8

5 40=5×8

6 48=6×8

As we can clearly observe from the table above that if d is the number of days then the cost c is written as:

c=8d

Hence, Correct option is:

c=8d

D)

The cost is a direct variation of the days by a factor of 8.

Factor 7a^3+28a^2-35a

Answers

$7a^3+28a^2-35a=7a(a^2+4a-5)=(*)\n \n-------------------------------\n \na^2+4a-5-a^2-a+5a-5=a(a-1)+5(a-1)=(a-1)(a+5)\n \n-------------------------------\n \n(*)=7a(a-1)(a+5)$

$7a^3+28a^2-35a =\n \n=7a(a^2+4a+a-a-5) =\n \n= 7a(a^2+5a -a-5)=\n \n=7a[(a(a+5)-(a+5))]=\n \n=7a(a+5)(a-1)$

A basketball player has already scored 56 points of the game the team record for points in a game is 72 which equation would allow you to find how many more points to play needs to tie the record

Answers

Answer:

The equation is:

$x+56=72$

Where x is the amount of points needed to tie the record

Step-by-step explanation:

In order to write the equation, we must have to understand the paragraph to find the known facts, the information that we want to find (unknown data) and the relation between them

Known facts:

Player scored points: 56
Team record points: 72

Unknown data:

How many more points the player needs to tie the record?

This unknown data is named as x (the variable to find)

In order to find the relation between known facts and unknown data, we analyze the paragraph:

According to the text, x is the amount of point that the player have to add to his current score (56) to tie the team record (72).

This analysis can be summarized in this sentence: "x plus 56 points must be equal to76 points"

Finally the equation is:

$x+56=72$

think this may be wrong but i think that it is 72-56=
the reason that i think its wrong is that you have nothing after the equils exept for the answer

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