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hjlf
3 years ago
5

What is the measure of the obtuse angle in this figure? 5* *4°/x01

Mathematics
1 answer:
adell [148]3 years ago
5 0
25 i’m pretty sure




but i’d wait to see what other ppl say
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Triangle ABC has side lengths 8 cm, 17 cm, and x cm. The side length of x is shorter than the longest side. What does the value
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8 cm and 15 cm

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Parallel lines x and w are cut by transversals z and y and form 4 angles at each intersection. Where line x intersects with line
ale4655 [162]

Answer:

m\angle 1  =105^\circ\\m\angle 2  =75^\circ

Step-by-step explanation:

The diagram is drawn and attached below.

From the diagram

m\angle 2 =75^\circ $ (Alternate Angles)

m\angle 1+ m\angle 2 =180^\circ $ (Sum of angles on a straight line)\\m\angle 1+75^\circ  =180^\circ\\m\angle 1  =180^\circ-75^\circ\\m\angle 1  =105^\circ

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3 years ago
Solve for u<br> 3u = 78<br> Simplify your answer as much as possible.
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You simply divide 78 by 3, so the answer will be 26.
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3 years ago
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The average breaking strength of a certain brand of steel cable is 2000 pounds, with a standard deviation of 100 pounds. A sampl
Westkost [7]

Answer:

1963.2 pounds (lbs.)

Step-by-step explanation:

Things to understand before solving:

  • - <u>Normal Probability Distribution</u>
  1. The z-score formula can be used to solve normal distribution problems. In a set with mean ц and standard deviation б, the z-score of a measure X is given by: Z=\frac{X-u}{a}

The Z-score reflects how far the measure deviates from the mean. After determining the Z-score, we examine the z-score table to determine the p-value associated with this z-score. This p-value represents the likelihood that the measure's value is less than X, or the percentile of X. Subtracting 1 from the p-value yields the likelihood that the measure's value is larger than X.

  • - <u>Central Limit Theorem</u>
  1. The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean ц and standard deviation б , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean ц  and standard deviation s=\frac{a}{\sqrt{n} }

As long as n is more than 30, the Central Limit Theorem may be applied to a skewed variable. A specific kind of steel cable has an average breaking strength of 2000 pounds, with a standard variation of 100 pounds.

This means, ц  = 2000 and б = 100.

A random sample of 20 cables is chosen and tested.

This means that n = 20, s=\frac{100}{\sqrt{120} } =22.361

Determine the sample mean that will exclude the top 95 percent of all size 20 samples drawn from the population.

This is the 100-95th percentile, or X when Z has a p-value of 0.05, or X when Z = -1.645. So Z=\frac{X-u}{a}

  • By the Central Limit Theorem

Z=\frac{X-u}{a} \\-1.645=\frac{X-2000}{22.361} \\X-2000=-1.645*22.361

X =1963.2

<h3>Answer:</h3>

The sample mean that will cut off the top 95% of all size 20 samples obtained from the population is 1963.2 pounds.

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3 years ago
Charlie bought a pair of shorts at the store when they were having a 45% off sale.If the regular price of the pair of shorts was
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Charlie would have to pay 10 dollars






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