The claim that a researcher may infer a causal link between variables if one effects another is False.
What do you mean when you say that variables have casual relationships?If a change in one variable's level results in a change in the other variable, then there is a causal relationship between the two variables. Keep in mind that correlation does not always imply causation. Two variables may be linked together without one of them directly contributing to the other's observable behavior.
For instance,
the chart below illustrates the relationship between ice cream sales and temperature. Any business can utilize the concept of causality. As is clear from the graph, there is a correlation between warmer weather and increased sales.
A casual relationship between two variables only exists when one of the variables actually causes the other to exist, which does not appear to be the case here. Instead, since a change in one variable affects the other, this scenario can be thought of as a correlated relationship.
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I understand that the question you are looking for is:
a researcher may claim a causal relationship between variables if one variable influences another. please select the best answer from the choices provided.(True/False).
Members of a sports club are junior, adult
or senior.
80 of these members were asked whether
they prefer tea, coffee or hot chocolate.
25 members are senior, of which 13
prefer coffee.
10 juniors prefer tea.
There are no adult members who prefer
hot chocolate.
2 out of the 18 juniors prefer coffee.
4 out of the 28 members who prefer tea
are seniors.
What fraction of members in the club
prefer hot chocolate?
Give your answer as a fraction in its
simplest form.
Fraction of members in the club that prefer hot chocolate = [tex]\frac{7}{40}[/tex]
It's Given that :
A sports club has 80 participants.
Senior Members = 25
Junior Members = 18
Adult Members = 80 - (25 + 18) = 80 - 43 = 37
JUNIOR MEMBERS :
Prefers tea = 10
Prefers Coffee = 2
Prefers hot chocolate = 18 - (10 + 2) = 18 - 12 = 6
SENIOR MEMBERS :
Prefers tea = 4
Prefers coffee = 13
Prefers hot chocolate = 25 - (4 + 13) = 25 - 17 = 8
ADULT MEMBERS :
Prefers tea = 28 - (10 + 4) = 28 - 14 = 14
Prefers coffee = 37 - 14 = 23
Prefers hot chocolate = 0 (none)
Calculation of Fraction of members in the club that prefer hot chocolate = 8 + 6 = 14 members out of 80 members
= [tex]\frac{14}{80} = \frac{7}{40}[/tex]
Therefore 7 / 40 of members prefer hot chocolate.
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the function g is defined as followed
g(x)=2x^2-7
if the graph of g is translated vertically downward by 3 units, it becomes the graph of a
function h
FIND THE EXPRESSION FOR h(x)
(If you know how to answer these questions please help with the next 2 or three I will post afterwards)
Since the graph of g is translated vertically downward by 3 units, the graph of function h is equal to h(x) = 2x² - 10.
The types of transformation.In Mathematics, there are different types of transformation and these include the following:
ReflectionRotationTranslationDilationWhat is a translation?A translation can be defined as a type of transformation which moves every point of the object in the same direction, as well as for the same distance.
Since the graph of g is translated vertically downward by 3 units, the graph of function h would be represented by the following expression:
Note: g(x) = 2x² - 7
h(x) = g(x) - 3.
h(x) = 2x² - 7 - 3.
h(x) = 2x² - 10.
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In the figure below, m1=103°. Find m2.
1
2
Answer:
77 degrees
Step-by-step explanation:
180 - 103
You took a test last week and the average grade was a 73. The standard deviation was
4.9 points. List the values at one, two, and three standard deviations from the mean
and-one, -two, -3 deviations from the mean.
Edit View Insert Format Tools Table
12pt Paragraph
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2VT² V
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Values at one, two and three standard deviations are 77.9, 82.8 and 87.7 respectively. Values at -1, -2 and -3 standard deviations are 68.1, 63.2 and 58.3 respectively.
The average grade given = 73
So, the mean, μ = 73
The standard deviation, σ = 4.9
We need to find the 1,2 and 3 standard deviations and -1, -2 and -3 deviations from the mean.
We use the formula z = μ + nσ to find the values at nth deviations.
When n = 1
z = 73 + 1 x 4.9 = 77.9
When n = 2
z = 73 + 2 x 4.9 = 82.8
When n = 3
z = 73 + 3 x 4.9 = 87.7
When n = -1
z = 73 -1 x 4.9 = 68.1
When n = -2
z = 73 - 2 x 4.9 = 63.2
When n = -3
z = 73 - 3 x 4.9 = 58.3
Hence, these are the required values.
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Math homework for today
An Air Force plane left Nairobi and flew
toward Istanbul at an average speed of 380
km/h. A cargo plane left sometime later
flying in the opposite direction with an
average speed of 220 km/h. After the Air
Force plane had flown for ten hours the
planes were 5120 km apart. How long did
the cargo plane fly?
The cargo plane flew approximately 1,760 km.
What is an equation?An equation is a mathematical statement that includes the symbol 'equal to' between two expressions with equal values. For instance, 3x + 5 = 15. There are various types of equations, such as linear, quadratic, cubic, and so on. In this article, we will learn more about equations in math.So, according to the information the equation formed will be:
380x + 220(x+1) = 5120Now, solve the equation for x:
380x + 220x + 220 = 5120600x + 220 = 5120600x = 5120 - 220600x = 4900x = 4900/600x = 8.167Rounding off: 8
Cargo plane flied: 220x = 220(8) = 1,760 kmTherefore, the cargo plane flew approximately 1,760 km.
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if w≠0, what is the additive inverse of the expression -3/w
The additive inverse of the expression -3/w is 3/w.
A number is known as the additive inverse of another, if the sum of the two numbers comes out to be zero. For example- given a number 3, its additive inverse will be -3, as 3 + (-3) = 0. The additive inverse of 0 is 0 itself.
Here, we are given an expression -3/w, such that w ≠ 0
Let us assume that the additive inverse of -3/w is x
Then, the sum of -3/w and x must be equal to zero
⇒ -3/w + x = 0
adding 3/w to both sides
⇒ x = 3/w
Thus, the additive inverse of -3/w is 3/w.
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An initial investment of $200 is now valued at $350. The annual interest rate is 8% compounded continuously. The equation represents the situation, where t is the number of years the money has been invested. About how long has the money been invested? Use a calculator and round your answer to the nearest whole number.
5 years
7 years
19 years
22 years
ALSO IF U WANT TO AD.D ME ON SN.AP ITS
loca-kay
It would take 7 years for the initial investment of $200 to become $350
Which calculator is appropriate in this case?
The best calculator which addresses the case at hand is a financial calculator, since it is mandatory we make use of calculator to determine the number of years it takes for initial investment of $200 to grow to $350 with 8% interest compounded continuously, bearing in mind that we need to convert the interest rate to a discrete rate
Rd = (e^(Rc) - 1)
Rd=discrete annual rate=unknown
e=exponential value=2.7182818
Rc=continuous rate=8%
Rd=(2.1782818^(8%))-1
Rd=1.083287067-1
Rd=8.3287067%
I/Y=8.3287067=annual interest rate without the % sign
PMT=0(no annual additional investment)
PV=-200(initial investment)
FV=350(future value of investment)
CPT(press compute)
N=7
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Ava and Wyatt are reading the same book. At the beginning of the month, Ava was on
page 10 and Wyatt was on page 30. Ava will read 20 pages per day and Wyatt will
read 15 pages per day. Let A represent the page of the book that Ava is on at the end
of t days into the month, and let W represent the page of the book that Wyatt is on at
the end of t days into the month. Graph each function and determine after how many
days, t, Ava and Wyatt will be on the same page of the book.
Ava and Wyatt will take 4 days to be on the same page of the book.
X-values must be chosen and entered into the equation in order to graph a function. You will obtain a y-value once those values have been entered into the equation. A single point's coordinates are made up of its x and y values.
From the given question we can get:
A = 10 ₊ 20t
W = 30 ₊ 15t
Graph the each function to get the number of days.
A function can only be graphed if X-values are selected and put into the equation. Once those values are introduced into the equation, a y-value will be produced. The values of x and y are the coordinates of a single point.
Hence we get the number of days as 4. and the graph is attached below.
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whatsssss those fromm greatesttt to leassttt
greatest to smallest : [tex]= \sqrt[3]{88} ,\sqrt{19} ,\frac{28}{9}[/tex]
Fraction: A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator
Square root: In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square is x. For example, 4 and −4 are square roots of 16, because 4² = 16
Use this fraction calculator for adding, subtracting, multiplying, and dividing fractions. Answers are fractions in the lowest terms or mixed numbers in reduced form.
Input proper or improper fractions, select the math sign, and click Calculate. This is a fraction calculator with steps shown in the solution.
If you have negative fractions insert a minus sign before the numerator. So if one of your fractions is -6/7, insert -6 in the numerator and 7 in the denominator.
A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator.
Solution :
[tex]\sqrt[3]{88} \\\sqrt[3]{2.2.2.11} \\2\sqrt[3]{11} \\\sqrt[3]{11} = 2.224\\2.2.224\\4.448 ...(1)\\\\\\\frac{28}{9} = 3.333 ...(2)\\\\ \sqrt{19} = 4.359 ...(3)\\\\Form 1 , 2 & 3 \\\\greatest number to smallest number = 4.448 , 4.359 ,3.333\\= \sqrt[3]{88} ,\sqrt{19} ,\frac{28}{9}[/tex]
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1. write an expression equivalent to 7(x+1)-4(x+3) in simplest form
Answer:
3x-5
Step-by-step explanation:
Figure B is a dilated image of figure A. What is the scale factor?
When 1 gallon of gas has been used, the car has traveled miles.
Answer:
25 miles per gallon
Step-by-step explanation:
Because if 2 gallons is 50 miles then one gallon has to be 25 miles per gallon
The vertices of ABCDE are A(-6, 0), B(-3, 0), C(0, -3), D(-3, -6), and E(-6, -3). Find the vertices
of the image after a translation using the rule (x,y) → (x + 9, y - 6) and a dilation with a scale
factor of 1/3 centered at the origin.
The coordinates of the image of the vertices of the polygon are A''(x, y) = (1, - 2), B''(x, y) = (2, - 2), C''(x, y) = (0, - 1), D''(x, y) = (- 1, - 2) and E''(x, y) = (- 2, - 1).
What are the images of the vertices of a polygon by using rigid transformations?
Rigid transformations are transformations applied on geometric loci such that Euclidean distances in such constructions are conserved. Translations and dilations are common examples of rigid transformations.
If we know that A(x, y) = (- 6, 0), B(x, y) = (- 3, 0), C(x, y) = (0, - 3), D(x, y) = (- 3, - 6) and E(x, y) = (- 6, - 3), then the coordinates of the image are determined below:
Translation
A'(x, y) = (- 6, 0) + (9, - 6)
A'(x, y) = (3, - 6)
B'(x, y) = (- 3, 0) + (9, - 6)
B'(x, y) = (6, - 6)
C'(x, y) = (0, - 3) + (9, - 6)
C'(x, y) = (9, - 9)
D'(x, y) = (- 3, - 6) + (9, - 6)
D'(x, y) = (6, - 12)
Dilation
A''(x, y) = (1 / 3) · (3, - 6)
A''(x, y) = (1, - 2)
B''(x, y) = (1 / 3) · (6, - 6)
B''(x, y) = (2, - 2)
C''(x, y) = (1 / 3) · (0, - 3)
C''(x, y) = (0, - 1)
D''(x, y) = (1 / 3) · (- 3, - 6)
D''(x, y) = (- 1, - 2)
E''(x, y) = (1 / 3) · (- 6, - 3)
E''(x, y) = (- 2, - 1)
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7:40pm------What is 89 minutes more? (What time will it be?)
The current time is 08 : 09 pm
How to determine the current time?The given parameters are
Time = 7 : 40 pm
Minutes added = 89 minutes
The current time is calculated as
Current time = Time + Minutes added
So, we have
Current time = 7 : 40 pm + 89 minutes
Evaluate the sum
Current time = 7 : 129 pm
Rewrite properly as
Current time = 08 : 09 pm
Hence, the current time is 08 : 09 pm
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
(14+3)(2
x 6)
Answer: 204
Step-by-step explanation:
(14+3)(2 x 6)=
(17)(2 x 6)=
(17)(12)=
17*12=
17*(10+2)=
17*10+17*2=
170+34=204
Answer:204
Step-by-step explanation:
You play a game on your phone. For every correct move you make, you receive 50 points. For every second that it takes you to complete the game, you lose 3 points. You complete the game in 2 minutes 24 seconds using 35 correct moves. What is your score?
You get 1750 points from the 35 correct moves (35 x 50) and you get -432 points from time taken (144 x -3) therefore you end the game with 1318 points.
1318 Points.
Help I will Mark A Brainlist !!!! Its A Math Question Find the length of a.
Thank you ao much !!! I hope you have a good day!
Answer: a=2√5
Step-by-step explanation:
We have a right-angled isosceles triangle
Hence, a=2√5
Find the missing terms in the sequence.
4, 6, 10, 16, 24, 34, __, 60, 76, __, 114
Enter the two missing terms with only a comma between them.
Answer:
46, 94
Step-by-step explanation:
hope this works for you :)
Marco earns a commission rate of 6% for
the first $6,500 ins sales and 9% on sales
over $6,500. Find the total graduated
commission on sales of $10,500.
Total graduated commission earned by Macro on sales of $10,500 with the rate of 6% on the first $6500 and 9% on sales over $6500 is equal to $750.
As given in the question,
Macro earns commission rate of 6% for the first $6500
And 9% on sales over $6500
Out of $10,500
For first $6500 Commission =(6500 × 6)/ 100
= $390
For $ (10,500 - 6,500 = 4000) commission = (4000 × 9)/ 100
= $360
Total graduated commission on sales of $10,500 = $( 390 + 360)
= $750
Therefore, total graduated commission earned by Macro on sales of $10,500 with the rate of 6% on the first $6500 and 9% on sales over $6500 is equal to $750.
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A jug contains 3/4 pints of orange juice. After you pour 5/8 of a pint into a glass, how much is left in the jug?
Answer:
1/8
Step-by-step explanation:
I WILL CHOOSE THE BRAINLIEST!!!!
the probability that a random selected student walks to the school is 19.5%, the correct option is D.
How to find the probability?We want to find the probability that a random selected student walks to the school.
To find it, we just need to take the quotient between the number of students that walk to the school and the total number of students.
The number of students that walk to the school is:
42 + 36 = 78
The total number of students is:
85 + 77 + 30 + 47 + 42 + 36 + 44 + 39 = 400
Then the probability is:
P = 78/400 = 0.195
To get this in percentage form, we just multiply by 100%.
0.195*100% = 19.5%
The correct option is D.
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According to government tests, a late model hybrid car gets 45 miles per gallon of gas. If gasoline sells
at $3.20 per gallon, how many miles will the car travel on $20.00 of gas?
Mai-Lin measures her heart rate whenever she exercises and tries to make sure that she is staying in her target heart rate zone. The American Heart Association suggests a target heart rate of T=0.75(220-a), where T is a person's target heart rate and a is his or her age.
b. If Mai-Lin's target heart rate is 153, then how old is she? What property justifies your calculation?
When Mai-Lin's target heart rate is 153, then her age is 16 years.
How to illustrate the function?From the information, the The American Heart Association suggests a target heart rate of T=0.75(220-a),
where T = person's target heart rate
a = his or her age.
Therefore, when the heart rate is 153, the age will be:
T = 0.75(220 - a)
153 = 165 - 0.75a
0.75a = 165 - 153
0.75a = 12
Divide
a = 12/0.75
a = 16
The person's age is 16 years.
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what is 6.31 converted to a percentage?
Answer:
631%
Step-by-step explanation:
Answer:
631%
Step-by-step explanation:
Evaluate each expression the equation is 2a+(b^2divided 3) and a=4 and b=6
Answer:
20
Step-by-step explanation:
PLS HELP ASAP!!!! WILL GIVE BRAINIEST!!!!!! 100 POINTS!!!!!
SEE ATTACHED PIC
Answer:
y-coordinate
Step-by-step explanation:
x-intercepts lie on the x-axis. On the x-axis, y=0 while the x value is changing.
Answer: Set the Y equal to zero and solve for x
Step-by-step explanation:
Ysau paints the back of an airplane hangar that is in the shape of a semicircle on top of a rectangle. Determine the approximate area that Ysau paints. I 24 ft 12 ft
Answer:
Step-by-step explanation:
Based on the dimensions of the semicircle and the rectangle, the approximate area that Ysau paints is 514 ft²
What area did Ysau paint?First, find the area of the rectangle:
= 24 x 12
= 288 ft²
The area of the semi-circle is the area of a circle divided by two. The radius is half of the longer side of the rectangle:
= 24 / 2
= 12 ft
Area of the semicircle is:
= (22/7 x 12 x 12) / 2
= 226 ft²
The total approximate area is:
= 226 + 288
= 514 ft²
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Which expressions are equal to 8 × 10 5 squared? Select all that apply.
The expression equal to 8 × 10 5 squared is 64 × 10^10
What is scientific notation?
Scientific notation is a mathematical way of expressing numbers that are too large or small to be written in decimal form.
Given the expression;
(8 × 10^ 5)²
expand the bracket
(8)² × (10)^ 5× 2
Find the squares
64 × 10^10
This is expressed as;
64 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10
Thus, the expression equal to 8 × 10 5 squared is 64 × 10^10
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AB=2x+7,AC=7x-3,BC=4x-2
The value of x on the line segment is 8
How to determine the value of x?The given parameters are:
AB = 2x + 7
AC = 7x - 3
BC = 4x - 2
The above means that the point B is on the line segment AC
So, we have:
AC = AB + BC
This gives
2x + 7 + 4x - 2 = 7x - 3
Evaluate the like terms
-x = -8
Divide both sides by -1
x = 8
Hence, the value of x on the line segment is 8
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