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Hunter-Best [27]
3 years ago
9

Do stain-polyurethane mixes protect wood as well as stain and polyurethane applied in separate coats? Five types of wood will be

used, with two boards of each type of wood. One board of each type of wood (randomly selected) will have the stain-polyurethane mix applied to it, and the other will have stain and polyurethane applied in separate coats. Each board will have water poured on it, and the amount of water retained will be measured. Which significance test is most appropriate
Mathematics
1 answer:
Marina CMI [18]3 years ago
8 0

Answer:

A matched-pair t-test for a mean difference

Step-by-step explanation:

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there are 24 students in a class.8 of the students are boys.write the amount of boys in the class as a fraction in its simplest
Shkiper50 [21]

Answer:

8/24 which is 1/3

Hope that helps:) Brainliest?? Feel free to ask me more questions



Step-by-step explanation:


5 0
3 years ago
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Plz help me with this! Thx in advance! <br> (I need to show work)
andrew-mc [135]
A. 35/100 * 240 = 35 * 240 / 100 = 84
B.125/100 * 80 = 125 * 80 /100 = 100
C. 60/ 75% = 60 * 100 / 75 = 8
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7 0
3 years ago
Solve the system of linear equations by elimination 2x+7y=1 2x-4y=12
pishuonlain [190]

\left\{\begin{array}{ccc}2x+7y=1\\2x-4y=12&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+7y=1\\-2x+4y=-12\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad11y=-11\qquad\text{divide both sides by 11}\\.\qquad\qquad \boxed{y=-1}\\\\\text{Put the value of y to the first equation:}\\\\2x+7(-1)=1\\2x-7=1\qquad\text{add 7 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\Answer:\ \boxed{x=4\ and\ y=-1\to(4,\ -1)}

3 0
4 years ago
How to evaluate this f (x) = -x^+1 for x =-3
sukhopar [10]
Just plug in -3 for x. So it will be -(-3)^+ 1
Which is 3^+1.
I'm confused by your ^ sign I'm not sure if this is supposed to be squared or not...? But just solve/simplify the equation.
Hope this helps!
4 0
3 years ago
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Diamond bought a few swirl marbles and divided it equally among four of her friends and her brother, Jordan. While playing, Jord
valkas [14]

Answer:

45?

9 marbles x 5 (four of her friends plus jake)

Step-by-step explanation:

5 0
3 years ago
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