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2 years ago

-1 1/2 5/6 + 3/14 / 3/7 + 3/2 1/2

Mathematics

1 answer:

Advocard [28]2 years ago

8 0

Answer:

-1 2/27

Step-by-step explanation:

-1 1/2 × 5/6 + 3/14 ÷ 3/7 + 3/2 × 1/2

= -1 1/4 + 3/14 ÷ 1 13/14 × 1/2

= - 1 1/28 ÷ 27/28

= -1 2/27

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Step-by-step explanation:

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3 years ago

Janet Fog's uncle, Pete Moore, promised her a gift of $30,000 upon her graduation from law school or $1500 every quarter for the

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First calculate the future value of the annuity
The formula to find the future value of an annuity ordinary is
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3 years ago

The ages of three cousins are consecutive even whole numbers. The sum of the youngest and oldest is 16. How old is the oldest co

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3 years ago

Assume the bear can walk in any direction at a rate of 2 miles per hour. Suppose the bear was last seen 4 hours ago.how large an

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3 years ago

The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0 (Think of these as

bija089 [108]

Answer:

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 70

Standard Deviation, σ = 3

Sample size, n = 36

Let the average score of all pro golfers follow a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(score of the 36 golfers was between 70 and 71)

$\text{Standard error of sampling} = \displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = \frac{1}{2}$

$P(70 \leq x \leq 71) = P(\displaystyle\frac{70 - 70}{\frac{3}{\sqrt{36}}} \leq z \leq \displaystyle\frac{71-70}{\frac{3}{\sqrt{36}}}) = P(0 \leq z \leq 2)\\\\= P(z \leq 2) - P(z \leq 0)\\= 0.977 - 0.500 = 0.477= 47.7\%$

$P(70 \leq x \leq 71) = 47.7\%$

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

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3 years ago

-1 1/2 *5/6 + 3/14 / 3/7 + 3/2 * 1/2

-1 1/2 5/6 + 3/14 / 3/7 + 3/2 1/2