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Rzqust [24]
3 years ago
13

Help me pls‼️‼️‼️❤️❤️

Mathematics
2 answers:
Furkat [3]3 years ago
7 0

Answer:

25%

Step-by-step explanation:

1. Find the area of both Circles: A = \pi r^{2} A = \pi 2^{2} = 4\pi   A = \pi 1^{2} = \pi

2. \frac{\pi }{4\pi } to find the percentage

3.  0.25 = 25%

Viktor [21]3 years ago
3 0

Answer:

= 50%

Step-by-step explanation:

There is one point, random number = 1

There are two circles, sample space = 2

{ \tt{probability =  \frac{1}{2} }} \\ { \tt{percentage =  \frac{1}{2} \times 100\% }} \\  = 50\%

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Simplify write in factored form
Viktor [21]
Use the ma th way app. It will help
8 0
3 years ago
The golf scores for a school team were normally distributed with a mean of 68 and a standard deviation of three. What the probab
Sloan [31]

Answer:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the golf scores of a population, and for this case we know the distribution for X is given by:

X \sim N(68,3)  

Where \mu=68 and \sigma=3

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(Z

We can use the following excel code to find it: "=NORM.DIST(-1,0,1,TRUE)"

8 0
3 years ago
Help me please I don't understand! 0
yawa3891 [41]
1. Right
2. I forgot how to do that
3. X is 45
4. Y is 45
5 0
4 years ago
There is a bag with only red marbles and blue marbles. The probability of randomly choosing a blue marble is 2/9 . There are 63
Verdich [7]

Answer:

49 red marbles

Step-by-step explanation:

There is a bag with only red marbles and blue marbles.

We are told in the question that:

The probability of randomly choosing a blue marble is 2/9 . There are 63 marbles in total in the bag

Hence: since

P(Blue marbles) = 2/9

Hence,

The number of blue marbles = 63 ÷ 9

= 7

Hence:

2 × 7/9 × 7 = 14/63

Hence, the number of blue marbles = 14 blue marbles

The number of red marbles bus calculated as:

63 - 14 blue marbles

= 49 red marbles

4 0
3 years ago
What is the measure of angle x?
gayaneshka [121]
You would subtract 180-50
b. 130 degrees
6 0
4 years ago
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