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4 years ago

What is the value of the angle marked with X?

Mathematics

2 answers:

yawa3891 [41]4 years ago

5 0

Answer:

x = 132

Step-by-step explanation:

In a parallelogram,adjacent angles add to 180

Opposite angles are equal

OverLord2011 [107]4 years ago

3 0

Answer:

132

Step-by-step explanation:

Obtuse angles. It's a parallelogram, not a triangle.

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3 years ago

What is the probability that the mean duration of the 24 rowers with idna exceeds 63 minutes?

statuscvo [17]

Answer:

Step-by-step explanation:

Given that: Training-session duration of female rowers with normal iron status is Normally distributed, with mean 69 minutes and standard deviation 18minutes.

Solution:

z score shows the relationship between sample means. The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by the formula:

$z=\frac{x-\mu}{\sigma}\\\\for\ sample(n):\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} } \\\\where\ \mu=mean,\sigma=standard\ deviation,x=raw\ score$

Given that μ = 69 minutes, σ = 18 minutes, n = 24

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$z=\frac{x-\mu}{\sigma / \sqrt{n} } =\frac{63-69}{18/\sqrt{24} }=-1.63$

From the distribution table, P(x > 63) = P(z > -1.63) = 1 - P(z < 1.63) = 1 - 0.0516 = 0.9484

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3 years ago

What’s the correct answer for this?

charle [14.2K]

Answer:

YT AND RQ

Step-by-step explanation:

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3 years ago