A researcher predicted that the presence of other people (the independent variable) leads to a decrease in math performance (the dependent variable). To test this prediction, the researcher had participants first complete a set of math problems while alone and then, the same participants completed a set of math problems with other people present. After each participant was tested in both conditions, the researcher compared the results. In this study, the researcher used a

Answers

Answer 1

Answer:

participatory design

Step-by-step explanation:

Participatory Design (PD) is defined as an approach that is used for assessment as well as design and development of the technological and the organizational systems.

This method is used to a control and the experimental groups that is as similar as possible. Therefore the participants served their own control group. And so rather than replying the random assignment to produce an equal groups, the researchers have the same group of the participants that experience various conditions in the study.


Related Questions

(b) If n(U)= 300, n(M) = 150, n(T) = 144 and n( MT)= 33. Find the value of n(MUT). (ii) Present the above information in a Venn diagram. ​

Answers

Answer:

Step-by-step explanation:

n(M ∪ T) = n(M) + n(T) - n(M∩T)

               = 150 + 144 - 33

               = 294 - 33

               = 261

when I add a number to another number four times as big, the result is 30. find the first number

Answers

Answer:

x = 6

Step-by-step explanation:

Let x = first number

x+4x = 30

5x = 30

Divide by 5

5x/5 =30/5

x = 6

Let's assume the number is N

According to the question,

when I add a number to another number four times as big, the result is 30.

[tex]x+4x=30\\\\5x=30\\\\x=\dfrac{30}{5}\\\\x=\frak{6}[/tex] 

find x, plzz helpp only have an hour to do this

Answers

Answer:

E. None of these

Step-by-step explanation:

Using the angle 43, we see that we will use Cos to find x.

This is because the sides are the adjacent and the hypotenuse

Cos (43) = 14/x

Multiply both sides by x

X (cos (43)) = 14

Then divide both sides by (cos(43))

x = 14 / cos(43)

Plug it into the calculator you get:

x = 25.22

Since this is not an answer choice, the answer is E. None of these

A regular polygon has 10 sides. Find the sum of interior angle

Answers

Answer:

Step-by-step explanation:

trewdsffffffffffffsdf

A 10 sided polygon is 1,440, you find this using the formula (n-2)(180). To find the measure of each interior angle u divide the sun by the amount of sides in the polygon. 1,440/10= 144

Porfa es para un examen xD

Answers

Answer: -13

Step-by-step explanation:

M(3) → x = 3M(2) → x = 2

[tex]\frac{M(3)+M(2)}{2} =\frac{[-2(3)^{2}] +[-2(2)^{2}]}{2}=\frac{(-2)(9)+(-2)(4)}{2}=\frac{-18-8}{2}=\frac{-26}{2}=-13[/tex]

I think this is the answer for your problem

PLS HELP 10 POINTS!!!

Identify the term whose coefficient is -12 in the expression:
98x – 12xy2 - 15xy2

Answers

Answer:

[tex] - 12xy {}^{2} [/tex]

Step-by-step explanation:

A coefficient is a rational number in front of multiple consecutive terms.

Which inequality is true?

Answers

Answer:

[tex]\boxed{\sf Option \ C \ is \ correct .}[/tex]

Step-by-step explanation:

We need to tell which of the given inequality is true . The given inequalities are ,

[tex]\sf A)\pi + 8 <11\\\\\sf B) \dfrac{\pi}{8} > 2 \\\\\sf C) 3\pi > 9 \\\\\sf D) 2\pi - 1 < 5 [/tex]

Let's check the options one by one .

Option A :-

[tex]\sf\longrightarrow \pi + 8 < 11[/tex]

Subtract 8 to both sides ,

[tex]\sf\longrightarrow \pi < 11 - 8 [/tex]

Simplify ,

[tex]\sf\longrightarrow \pi < 3[/tex]

We know the approximate value of pi 3.14 . But the inequality says pi is less than 3 . Therefore the given inequality is incorrect .

______________________________________

Option B :-

[tex]\sf\longrightarrow \dfrac{\pi}{2} > 2 [/tex]

Multiply both sides by 2 ,

[tex]\sf\longrightarrow \pi > 4 [/tex]

We know the approximate value of pi 3.14 . But the inequality says pi is more than 4 . Therefore the given inequality is incorrect .

______________________________________

Option C :-

[tex]\sf\longrightarrow 3 \pi > 9[/tex]

Divide both sides by 3 ,

[tex]\sf\longrightarrow \pi < 9/3[/tex]

Simplify ,

[tex]\sf\longrightarrow \pi > 3 [/tex]

We know the approximate value of pi 3.14 .And the inequality says pi is more than 3 . Therefore the given inequality is correct .

Option C is correct .

If 3x−y=12, what is the value of
8x
--
2y

Answers

Answer:

wait few minutes i will try

Please help I don’t understand how to solve this !

Answers

Answer:

x = 30

Step-by-step explanation:

x + 2x + 3x = 180

             6x = 180

              6       6

               x =  30

How do you figure this out?

Answers

He estado dos días de viaje, gastandome el primer día 1/3 de dinero que tenia y el segundo 1/5 ¿Qué parte del dinero que tenia me ha sobrado?

Im not exactly understanding this question. Can someone please help me and possibly explain this to me?

Answers

Answer:

From the graph, when x=-6, y=1

so, your answer is A) f(x)=∛(x-6)+1

OAmalOHopeO

Hello again guys I need help with the highest common factor of 12x³yz⁵;16x⁴y³z²​

Answers

Answer:

hello,

Step-by-step explanation:

a=12*x³yz⁵=4*3*x³yz⁵

b=16*x⁴y³z²=4*4*x⁴*y³*z²

hcf(a,b)=4*x³*y*z²=4x³yz²

On circle O below, SE is a diameter. What is the measure of angle ISE?​

Answers

Answer:

Angle LIS is congruent to angle DIE making both of them 61°, angle LID and angle SIE are congruent as well. When you add LIS, DIE, LID, and SIE all add to 360°. So 61+61 equals 122. 360-122 is 238. You divide 238 by 2 to get 119. That will be the measure of angle SIE. A triangle is a total of 180° so add up the angles 27° + 119° to get 146°. Subtract that from 180° to get 34°.

34° is the measure of ISE

Hope this helps!

Step-by-step explanation:

Mercedes tiene una habilidad increíble al encontrar el número que falta; ella sólo suma y ya tiene la respuesta correcta, ¿Cuál es el valor de x? 32 10 41 22 10 33 53 16 62 25 x 25

Answers

El ejercicio completo es el siguiente:

Mercedes tiene una habilidad increíble al encontrar el número que falta; ella solo suma y ya tiene la respuesta correcta.

¿Cuál es el valor de x?

32 10 41

22 10 33

53 16 62

25 (x) 25

A) 10

B) 11

C) 12

D) 13

E) 14

Answer:

La  respuesta correcta es E: 14

Step-by-step explanation:

El ejercicio nos da una pista importante: solo sumar, así que al  mirar la ubicación de la variable x podemos deducir que los valores del centro son el resultado de una suma, ahora para saber si es cierto ,debemos hacer la prueba,entonces empezamos a sumar los dígitos por separado  de los valores dados ;

32 10  41 = 3+2+4+1 esto es igual a 10 el valor del centro

22 10  33= 2+2+3+3 esto es igual a 10 el valor del centro

53 16 62 = 5+3+6+2 esto es igual a 16 el valor del centro

Por lo tanto para hallar el valor de x debemos hacer lo mismo:

25   x   25 = 2+5+2+5 esto es igual 14

Entonces nos queda : 25 14 25= 2+5+2+5 igual a 14

You are an avid coin collector. You decide to start keeping better track of your coin collection:after 15 days you count and find out you have 155 coins. After 22 days,you have 218 coins. Write an equation in point-slope form

Answers

9514 1404 393

Answer:

  y - 155 = 9(x -15)

Step-by-step explanation:

The given points are ...

  (days, coins) = (15, 155) and (22, 218)

The slope is given by the slope formula:

  m = (y2 -y1)/(x2 -x1) = (218 -155)/(22 -15) = 63/7 = 9

The point-slope form is for a line with slope m through point (h, k) is ...

  y -k = m(x -h)

Here, we have m=9 and (h, k) = (15, 155), so the equation can be written ...

  y - 155 = 9(x -15)

Instructions: Find the measure of the indicated angle to the nearest degree.

Answers

Answer:

? =30

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opp / hyp

sin ? = 25/50

Taking the inverse sin of each side

sin ^-1( sin ?) = sin^-1 ( 1/2)

? =30


What is the value of x?
750
37°

Answers

whats the problem? i cant solve it w/o the problem doll

How to solve this truth table ( p-->q) v q
p q
T T
T F
F T
F F

Answers

Without using a truth table:

(pq) ∨ q   ⇔   (¬pq) ∨ q   ⇔   ¬pq   ⇔   pq

With a table:

p   …   q   …   pq   …   (pq) ∨ q

T   …   T   …       T       …          T

T   …   F   …       F       …          F

F   …   T   …       T       …          T

F   …   F   …       T       …          T

A chemist is conducting an experiment which involves a certain chemical reaction. He begins the experiment with 666 milliliters of the chemical, which is consumed by the reaction at a varying rate that is no more than 13 milliliters per minute. Partway through the experiment, the chemist measures the amount of chemical remaining. If there are 562 milliliters of the chemical left, what is the smallest number of minutes that could have passed?

Answers

Answer:

8 Minutes

Step-by-step explanation:

since we are trying to find how many minutes have passed we first need to find how much substance was used during the time. we can do that by subtracting the leftover substance from the amount we started with.

666-562 = 104

Now that we know how much substance was used we can then use our conversion rate (13 per minute) and find how many minutes have passed by dividing.

104 / 13 = 8

1/(x+1) + 1/a(x+1) find the lcm​

Answers

Answer:

See below.

Step-by-step explanation:

1/(x + 1) consists of 1 factor, 1/(x + 1)

1/[a(x + 1)] consists of two factors, 1/a and 1/(x + 1)

The LCM is 1/[a(x + 1)]

The LCD is a(x + 1)

Which expression correctly represents "six more than the a quotient of three and a number, decreased by eight"'

Answers

Answer:[tex] (\frac{3}{x} + 6) - 8[/tex]

Answer:

[tex]\frac{3}{x-8} +6[/tex]

Step-by-step explanation:

six more than.....  (+6)

the a quotient.... (÷)

of three ..... (3)

and ....(separator between numerator and denominator)

a number, decreased by eight... (x-8)

The area of a square, a, depends on its side length, s.
The
is a function of
The function
notation is
_(_).

Answers

Answer:

Let area be a and side be s :

[tex]{ \tt{a \: \alpha \: s²}} \\ a = ks²[/tex]

k is a constant, k=1

Which equation can be represented using the number line?

A number line going from to 1 in increments of one-eighths. Arrows go from each mark on the line to the next up to three-fourths.
Three-fourths divided by one-eighth = 6
One-eighth divided by three-fourths = 6
6 divided by three-fourths = one-eighth
6 divided by one-eighth = three-fourths

Answers

Answer:

A number line going from to 1 in increments of one-eighths. Arrows go from each mark on the line to the next up to three-fourths.

Step-by-step explanation:

Hope this helps!

Answer:

I'm pretty sure its 6 divided by 1/8=3/4 (D)

Step-by-step explanation:

Evaluate function from their graph

Answers

Answer:  5

This is because the point (0,5) is shown on the graph. This is the point on the y axis.

We can say that h(x) = 5 when x = 0.

Answer:

5

Step-by-step explanation:

The fellow who expalined it before before me expalined it correctly, so the answer should be 5.

which of the following is equivalent to 18-
[tex] \sqrt{ - 25} [/tex]
a 5i
b 18-5i
c 18+5i
d 23​

Answers

Answer:

[tex]18-\sqrt{-25}[/tex]

[tex]\sqrt{-25} =5i[/tex]

[tex]=18-5i[/tex]

OAmalOHopeO

What is the x-coordinate of the red point?
A. 3
B. 2
C. -2
D. -3

Answers

The answer is 2 on the x axis

Help this is due in 10 mins

Answers

Answer:

Only A is true

for sure

....................

A polynomial p is graphed. What could be the equation of p? Choose 1 answer:
A. p(x) = x( x + 2)(2x + 7)
B. p(x) = x(x - 2)(2x - 7)
C. p(x) = x(2x) (7/2x)
D. p(x) = x(-2x)(- 7/2x)

Answers

Answer:

[tex]\text{B. }p(x)=x(x-2)(2x-7)[/tex]

Step-by-step explanation:

The zeroes of a function occur when the function crosses the x-axis. The function shown crossed the x-axis at [tex]x=0[/tex], [tex]x=2[/tex], and [tex]x=3.5[/tex]. These values of [tex]x[/tex] should produce an output of 0 when plugged into the function.

Therefore, the equation of the function graphed is [tex]\boxed{\text{B. }p(x)=x(x-2)(2x-7)}[/tex]

What are the coordinates of point A?

(8, –6)
(–6, 8)
(–5, 7)
(7, –5)

Answers

Answer:

(7, - 5 )

Step-by-step explanation:

A is positioned at (7, - 5 )

what is the quotient in simpilst form? 4 1/2 ÷ 1 1/4​

Answers

Answer:

Step-by-step explanation:

Convert mixed fraction to improper fraction.

[tex]4\frac{1}{2}[/tex] ÷ [tex]1\frac{1}{4} =[/tex] [tex]\frac{9}{2}[/tex] ÷ [tex]\frac{5}{4}[/tex]

In fraction division, Use KCF method

K - Keep the first fraction

C - Change the ÷ operation to  * operation

F - Flip the second fraction

  [tex]= \frac{9}{2}*\frac{4}{5}\\\\= \frac{9}{1}*\frac{2}{5}\\\\=\frac{18}{5}\\\\= 3\frac{3}{5}[/tex]

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What information should be included in an in-text citation from a publication when you know who the author is?The article's title and the date it was publishedThe author's last name and the page number where the information appearsThe article's title and the page number where the information appearsThe author's last name and title of publication where the information appears Is the function f(x) = 1/8 ^x an exponent function? If so , identify the base , if not why not ? Yes , the base is 1/e yes, the base is eNo, there is no base that is a positive real number not equal to 1 raised to a variable exponent.No, the base is the reciprocal of e, a number smaller than 1. What is an equation of the line that passes through the points (-2,8) and (1, -1)? Cole deposits $500 into his savings account. The bank pays him 2% interest on the amount he has in his account. What expression would youuse to find the total Cole has in his account? ResetWhich of the following is TRUE about osmosis?i. Osmosis is a type of active transport.ii. Kidney dialysis is an example of osmosis process. Enlist any five objectives of population education. Find the measure of the indicated angle to the nearest degree Landslide - Vajont Dam Slide, Italy. These placemarks fly you to the site of the Vajont Dam disaster that occurred in Italy in 1963. Which answer correctly identifies the features highlighted by the Problem 10a, 10b, and 10c placemarks?a. Problem 10a: dam; Problem 10b: hummocky debris apron; and Problem 10c: slide scar b. Problem 10a: hummocky debris apron; Problem 10b: slide scar; and Problem 10c: dam c. Problem 10a: slide scar; Problem 10b: dam; and Problem 10c: hummocky debris apron Solve the equation.3 - 6 = 6x - 9 What Is an WTAR and NART test, what are they and how are they measured? (Psychology) La base de un rectangulo es doble que su altura Cuales son sus dimensiones si el permetro mide 108 cm the teacher corects our exercises at home - Which of the following is the correct distance between the points (-5, 3) and (7,8)? The equations y=x228 and y=2x2 are graphed below. What are the solutions to the equation x228=2x2?A x=8 and x=2B x=6 and x=10C x=4 and x=4D x=2 and x=6 30PTS PLEASE I NEED HELP Factor completely: 64y^3 -729z^3 Nedra worked 46 hours and received $6.25 per hour for regular pay andtime-and-a-half for all hours over 40 hours. What were her weeklyearnings?a. $306.28b. $379.50c. $250d. $56.28 (810-7) - (-6.25 10-2) How do our facial expressions influence our feelings? How has this been tested? I dont get itttttttttt Factor X squared minus 2X -80