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lidiya [134]
3 years ago
7

William the researcher conducted a study on monitor size and reaction time. The research matrix is given below. 17 inch 19 inch

21 inch 25 participants 25 participants 25 participants If you wanted to give every participant in the study a piece of paper with the contact information of the researchers, how many pieces of paper will you need for this between subjects design?
Mathematics
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

225 p/p

Step-by-step explanation:

This design consists of 3 groups of participants, each with 25 members and three case studies, thus:

              case (1) 17 inch ----------- 25 members

              case (2) 18 inch ----------- 25 members

              case (3) 21 inch ----------- 25 members

Total:      case =  3           ----------- 75 members

Total pieces of paper = 3*75 = 225 piece of paper

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gulaghasi [49]
To find the area of a trapezoid, it’s 1/2(base 1 + base 2) x height.
so in this case, base 1 is 16 (add 12+2+2) (the top one) and base 2 is 12 (the bottom one) and the height is 9.
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8 0
3 years ago
I need help please can someone help
Liono4ka [1.6K]

Answer:

A 6 cm²

Step-by-step explanation:

The formula for the Surface Area of a Rectangle Prism and Square Prism [Cube] is below:

S.A = 2hw + 2bw + 2hb

Since 1 is the length of all edges, and also because all edges are congruent on a cube, you plug in 1 for the <em>height</em>, <em>width</em><em>,</em><em> </em>and<em> </em><em>base</em>:

6 = 2[1][1] + 2[1][1] + 2[1][1]

2 2 2

Or, you can just simply plug in 1 into the formula the exercise gave you and be done with it.

I am joyous to assist you anytime.

8 0
3 years ago
Connie has saved up $15 to purchase a new CD from the local store. The sales tax in her county is 5% of the sticker price. Write
Sholpan [36]

Answer:

x + 0.05x = 15, solution is $14.29

Step-by-step explanation:

We can create an equation for this scenario to try and solve it.

Assuming the cost of the CD is x, it’s sale tax will be 0.05x (as that is 5% of x, 0.05.)

We can write the equation in two ways:

x + 0.05x = 15 or 1.05x = 15.

Assuming we take the second one (easier to work with), we can divide both sides by 1.05. The equation simplifies to x = 14.289... which rounds to x = 14.29.

Therefore, the equation is x + 0.05x = 15 and the solution is $14.29.

Hope this helped!

3 0
3 years ago
Read 2 more answers
How many degrees is one rotation that will put a regular pentagon back on top of itself?
Dmitriy789 [7]
If you rotate about the circumcentre of a regular polygon 72° it will overlap with the original image.
8 0
3 years ago
Find the solutions to the system; y=x^2-3x-1 and y=8x-1
PSYCHO15rus [73]

{x}^{2}  - 3x - 1 = 8x - 1 \\  {x}^{2} - 11x = 0 \\ x(x - 11) \\ x = 0 \: or \: x = 11

When x = 0,
y = 8x - 1 \\ y = 0 - 1 \\ y =  - 1

When x = 11
y  = 8(11) - 1 \\ y = 87
x = 0, y = - 1
x = 11, y = 87

Answer is B.

Hope this helps. - M
8 0
3 years ago
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