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Nonamiya [84]
2 years ago
10

A new obstacle course is home to several new types of challenging obstacles. One such obstacle is traversing a 15-stair staircas

e. To make it more challenging, the stairs are not uniformly spaced. Rather, the vertical space between consecutive stairs for the first 10 stairs is 1 1/3 feet and the vertical space for the last 5 stairs is 1 3/4 feet. What is the total vertical distance traveled ascending and descending the entire 15-stair staircase?
Mathematics
1 answer:
Tresset [83]2 years ago
4 0

Answer: 22\frac{1}{2}\text{ Feet}

Step-by-step explanation:

Here, the vertical space between two consecutive stairs in first 10 stairs = 1\frac{1}{3}\text{ feet}

⇒ The total vertical distance for 10 stairs = 10\times 1\frac{1}{3}=10\times \frac{4}{3}=\frac{40}{3}\text{ feet}

Also, The vertical space between two consecutive stairs for last 5 stairs = 1\frac{3}{4}\text{ feet}

⇒ The total vertical distance for 10 stairs = 10\times 1\frac{1}{3}=5\times \frac{7}{4}=\frac{35}{4}\text{ feet}

Thus, The total vertical distance = Total vertical space for the first 10 stairs + Total vertical space for the last 5 stairs

= \frac{40}{3} + \frac{35}{4}

= \frac{160+105}{12}

= \frac{265}{12}

= 22\frac{1}{2}\text{ Feet}

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Vadim26 [7]

Answer:

H0: p ≥ 0.03 Ha: p < 0.03

Step-by-step explanation:

1) Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

2) Solution to the problem

On this case we want to test is p, where:

p represent the true proportion for the population of broken pieces

What we want to proof need's to be on the alternative hypothesis and the complement on the null hypothesis.

So the correct system of hypothesis for this case would be:

Null hypothesis: p\geq 0.03

Alternative hypothesis: p < 0.03

H0: p ≥ 0.03 Ha: p < 0.03

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2 years ago
the richmond park gamekeeper wanted to know how many deer were in the park . he caught 90 of them and put a small tag round a ho
Alenkasestr [34]

Answer:

a. Since 10 out of 70 had a tag we can write the ratio 10:70. We need to solve for x in 90:x. x = 630 so the answer is 630.

b. An assumption he could have made is that the number of deer that had a tag and the total amount of deer were directly proportional.

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valina [46]

For a probability distribution the expected value is the summation of product of probabilities with their respective data values. Let x be the probability that Jackson goes gym for 2 days and y be the probability that he goes gym for 3 days.

For the given case we have following values and their probabilities:

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2 : x

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Expected value is given to be 2.05. So we can write the equation as:

2x + 3y = 2.05 (Equation 1)

Also for a probability distribution, the sum of probabilities must always equal to 1. So we can set up the second equation as:

0.1 + x + y = 1

x + y = 0.9 (Equation 2)

From Equation 2 we can write the value of x to be x = 0.9 - y. Using this value in equation 1, we get:

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Using the value of y in equation 2 we get value of x to be 0.65

Therefore we can conclude that:

The probability that Jackson goes to gym for 2 days is 0.65 and the probability that he goes to gym for 3 days is 0.25

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Answer:

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Step-by-step explanation:

The correct statement for the given function is:

f(x) is an even function for all even values of m.

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13 more miles. You can use long division.
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