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Inessa05 [86]
3 years ago
10

Determine the area of the shaded region use 3 for pi

Mathematics
1 answer:
Olin [163]3 years ago
4 0

Answer:

Give us the shaded region

Step-by-step explanation:

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If you flip a fair coin 4 times, what is the probability that you will get exactly 2 tails
Ilia_Sergeevich [38]

Answer:

<h3>The answer is <u>3/8</u> NOT 50%</h3>

Step-by-step explanation:

One way to solve this problem is to figure out how many ways you can get exactly 222 tails, then divide this by the total number of outcomes you could have gotten. Since every outcome has equal probability, this will be the probability that you will get exactly 2 tails.

How many outcomes are there where you get exactly 2 tails? Try thinking of each outcome as a 4-letter word, where the first letter is "H" if the first coin toss was heads and "T" if it was tails, and so on.

So, the number of outcomes with exactly 2 tails is the same as the number of these words which have 2 T's and 2 H's.

How many of these are there? If we treat all the letters as unique, we'll find that there are 4! different arrangements, overcounting 2! times for every time we only switch the T's around, and 2! times for every time we only switch the H's around.

So, there are <u>4!/2!2!</u> = 6  

​  

<u>4!/2!2!</u>= 6 different outcomes where you get exactly 2 tails.

Altogether, there are 2^4 = 16 total possible outcomes.

So, the probability that you will get exactly 2 tails is <u>6/16</u> = 3/8

​  

4 0
3 years ago
2<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D%2048-3%20%5Csqrt%7Bx%7D%2012%2B3%5C%5C%2027" id="TexFormula1" title="\sqrt{x}
djyliett [7]

Answer:

This problem is not possible.

Step-by-step explanation:

Only functions and variables can have subscripts, or the number below the first 2. If we were to take that out, then we would get a line that starts at y = 8 and goes up on the x axis.

Hope that this helps!

8 0
3 years ago
Is my answer correct and how do you know? I just graphed it , is there another way I could do it?
Evgesh-ka [11]
Note the general equation of a circle is x^2 + y^2 = r^2, with centre (0, 0) and radius: r.

So, our equation of a circle is (x + 3)^2 + (y - 1)^2 = 100

Subtract 100 from both sides and plug in the points. If it equals to 0, then the points satisfy the equation of the circle (ie lies on the circle)
7 0
3 years ago
Read 2 more answers
The shower block on the campsite has an area of 144 m2 The length of the shower block is 24 m. What is the width? m
skad [1K]
Area= length*width

Plug in what you know. 

144= 24*width

Divide both sides by 24. 

width= 6 meters. 

I hope this helps!
~kaikers
4 0
3 years ago
On a cold winter morning, the temperature was -4 degrees C. By noon, the temperature was 0 degrees. Did the temperature increase
solmaris [256]

Answer:

It increased by 4 degrees. It from -4 up to 0.

Step-by-step explanation:

7 0
3 years ago
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