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jeka57 [31]
2 years ago
12

Dr. Johnson is studying the effects of alcohol consumption on memory. He randomly assigns people to four groups. Three groups co

nsume varying amounts of alcohol, and one group is given only soft drinks. This research design is called a(n) ________.
Mathematics
1 answer:
Hunter-Best [27]2 years ago
8 0

Answer:

Experiment

Step-by-step explanation:

I'm guessing ill look it up later in a dictionary, if its wrong, report the answer.

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Please Help!!!!! Bob has completed 72% of the levels on a video game. what fraction of the levels has bob completed? show your w
Nuetrik [128]
How many levels are in the game? You would take that number and multiply it by 0.72 to find 72% of it.
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2 years ago
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Find a simplified expression to represent the area of the triangle. The area formula for a triangle is bh, where b is the base a
snow_tiger [21]

Answer:4x^2+22x-12

Step-by-step explanation:

height=(2x+12)

base=(4x-2)

Area of =(base x height)/2

Area of =((4x-2)(2x+12))/2

Area of =(8x^2+48x-4x-24)/2

Area of =(8x^2+44x-24)/2

Area of =4x^2+22x-12

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3 years ago
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Simplify square root of negative 48
77julia77 [94]
\bf \sqrt{-48}\qquad 
\begin{cases}
48=2\cdot 2\cdot 2\cdot 2\cdot 3\\
\qquad 2^2\cdot 2^2\cdot 3\\
\qquad (2^2)^2\cdot 3
\end{cases}\implies \sqrt{-1\cdot (2^2)^2\cdot 3}
\\\\\\
\sqrt{-1}\cdot \sqrt{(2^2)^2\cdot 3}\implies i\cdot 2^2\sqrt{3}\implies 4\sqrt{3}\ i
5 0
3 years ago
Pls help me!! Will mark brainlest!!
Elodia [21]

Answer:

System of Equations:

let x be the cost of a taco

let y be the cost of a burrito

7x + 3y = 22

3x + y = 8

The cost of a taco is $1

The cost of a burrito is $5

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

4 0
3 years ago
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Solve each equation <br>x+1/8=8/x-1
Westkost [7]
X= Square root of 65.
3 0
2 years ago
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