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timofeeve [1]
3 years ago
6

Which of the following number sets does 25 belong in?

Mathematics
1 answer:
Ghella [55]3 years ago
5 0

Answer:

all of the above

Step-by-step explanation:

The number 25 is a natural number as it belongs to the set [1,2,3,4,5,......]

The number 25 is a whole number as it belongs to the set [0,1,2,3,4,5,......]

The number 25 is an Integer as it belongs to the set [...,-5,-4,-3,-2,-1,0,1,2,3,4,5,...]

The number 25 is a rational number as it can be expressed as \[\frac{25}{1}\]

For the same reason , number 25 is a real number as it belongs to the set of rational numbers.

So the correct option is "all of the above".

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The average life of individual is 70 years. With a standard deviation of 5.5 years. Assume that the lives of these individuals i
Harlamova29_29 [7]

Answer:

The answer is below

Step-by-step explanation:

Given that:

mean (μ) = 70 years, standard deviation (σ)= 5.5 years.

a) The z score measures how many standard deviation a raw score is above or below the mean. It is given as:

z=\frac{x-\mu}{\sigma}, for a sample size of n, the z score is: z=\frac{x-\mu}{\sigma/\sqrt{n} }

Given a sample of 5 turtles, we have to calculate the z score for x = 60 and x = 80.

For x = 60:

z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{60-70}{5.5/\sqrt{5} } =-4.07

For x = 80:

z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{80-70}{5.5/\sqrt{5} } =4.07

The probability that a mean life of a random sample of 5 such turtles falls between 60 and 80 years = P(60 < x < 80) = P(-4.07 < z < 4.07) = P(z < 4.07) - P(z < -4.07) = 1 - 0 = 1 = 100%

b) The z score that corresponds to top 10% is -1.28.

z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\-1.28=\frac{x-70}{5.5/\sqrt{5} }\\ x-70=-3\\x=70-3\\x=67\ years

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3 years ago
Marcy is taking part in a summer movie club. She will earn 3 points for each movie she attends throughout the summer. Which equa
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The answer is a \large y=3x
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This wind would be called a
Rina8888 [55]
Southeast, because it is between south and east on a compass
7 0
2 years ago
Read 2 more answers
Graph 25 = -5y -3x using the slope and y-intercept
wlad13 [49]

Step-by-step explanation:

you move -5y to the other side.

25=-5y-3xsubtract 25 both sides

0=-5y-3x-25then add 5y both sides

5y=-3x-25divide 5 both sides

y=-3/5x-5

m=-3/5 do rise over runrise/run

b=(0,-5)plot it

3 down and 5 to right or 3 up and 5 left

8 0
3 years ago
Please help!! ASAP!!!!
Softa [21]
Tan(theta)= pi

Now, in order for you to find the angle (theta), you would inverse tan both the left and the right to find the value. The inverse of tan is tan^-1.

tan(theta)=pi ---> theta = tan^-1(pi)

Then, you would plug tan^-1(pi) into a calculator, giving you the value 

1.26
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