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Shkiper50 [21]
3 years ago
12

In a class, half of students had gone to watch magic show. Twice the square root of

Mathematics
1 answer:
love history [14]3 years ago
3 0

Answer:

The total number of students is 36.

Step-by-step explanation:

You would get this answer because twice the square root of 6. 6x6 is 36. Hope this helps :)

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The distribution of income tax refunds follow an approximate normal distribution with a mean of $7010 and a standard deviation o
Andrej [43]

Answer:

A refund must be above $7,139 before it is audited.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 7010, standard deviation = 43.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

The empirical rule is symmetric, which means that the lowest (100-99.7)/2 = 0.15% is at least 3 standard deviations below the mean, and the upper 0.15% is at least 3 standard deviations above the mean.

Use the Empirical Rule to determine approximately above what dollar value must a refund be before it is audited.

3 standard deviations above the mean, so:

7010 + 3*43 = 7139.

A refund must be above $7,139 before it is audited.

5 0
2 years ago
B)must be initiated in the House
Lisa [10]
The answer is a because u replace x with zero to find the why value 
please rate this XD
5 0
3 years ago
PLEASE HELP ASAP!!!!! WILL GIVE BRAINLIEST TO FIRST CORRECT ANSWER!!!!!
vlabodo [156]
I believe it is D, hope this helped
4 0
3 years ago
Help please thank you
Wewaii [24]

Answer:

Exponential

Step-by-step explanation:

Exponential describes a very rapid increase. An exponential rise in the number of first graders with head lice might be a result of all the hat sharing that's gone on lately.

Exponential is also a mathematical term, meaning "involving an exponent." When you raise a number to the tenth power, for example, that's an exponential increase in that number. When your next door neighbor describes the exponential growth of her rose bushes or the exponential increase in members of her book group, she means that there's been a sharp, fast expansion of both things.

5 0
2 years ago
PLEASE HELP IM TIMED ON THIS!!!
Delicious77 [7]

Answer:

x = 7

Step-by-step explanation:

Hope this helps! : )

8 0
3 years ago
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