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gulaghasi [49]
2 years ago
7

2.

Mathematics
1 answer:
Marat540 [252]2 years ago
5 0

Answer: The amount of water draining at a rate of 2.5 gallons per minute.

Step-by-step explanation: A non-proportional relationship is when the slope passes through the origin. A non-proportional relationship does NOT have a fee.

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depends on how much pizza he has.

Step-by-step explanation:

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How many different pairs of faces are congruent in a rectangular prism that is not a cube
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2

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every rectangular prism has 6 faces, 2 will be congruent together and thw other 4 will be congruent to each other

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2 years ago
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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2 years ago
What’s the height of 3 2/5 inch and 5 1/10
KIM [24]

Answer:

8 1/2

Step-by-step explanation:

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3 years ago
In order to solve for x which trig function would be used cosine sine or tangent​
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Answer:

Cosine

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I took the test

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