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Kazeer [188]
3 years ago
6

The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation

s every minute. Which of the following equations can be used to model h, the height in feet of the end of one blade, as a function of time, t, in seconds? Assume that the blade is pointing to the right, parallel to the ground at t = 0 seconds, and that the windmill turns counterclockwise at a constant rate.
Mathematics
2 answers:
7nadin3 [17]3 years ago
6 0
<span>It could be C. If the blade spends twice in a minute, it would be 30 seconds. 30=2pi/B=pi/15. </span>
Komok [63]3 years ago
3 0

No equation on your list can be used to model 'h', because
you didn't provide a list.  That leaves me wondering just what
"the following" means, and it leaves me to create an equation
out of thin air.

So there's no way I can help you pick the right choice from
the list of choices.  But if you see anything there that looks
like this:

                             h = 35 + 10 cos( π t / 30 )

then go ahead and pick that one.

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Which pair of numbers is relatively prime? A. 42 and 77 B. 34 and 55 C. 45 and 102 D. 99 and 123
leonid [27]

Two pair of numbers are said to be relatively prime if there is no integer greater than 1, that divides them both.

Consider the given pair of the numbers to identify which pair is relatively prime.

1. Consider 42 and 77

7 is the number which divides 42 and 77 both. Therefore, they are not relatively prime.

2. Consider 34 and 55

Since, there is no number greater than 1, which divides both the numbers. So, they are relatively prime numbers.

3. Consider 45 and 102

3 is the number divides 45 and 102 both. Therefore, they are not relatively prime.

4.  Consider 99 and 123

3 is the number divides 99 and 123 both. Therefore, they are not relatively prime.

Therefore, Option B is the correct answer.

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A triangle has vertices at f (-7,3),g(2,6) and h(3,5)
Allisa [31]

Answer:

F(-7,3)  -> F'(-7,-3)

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Step-by-step explanation:

If you are taking point (a,b) and reflecting it across the x-axis (the horizontal axis), your x value is going to stay the same because you want the point on the same vertical line as (a,b).  The y-coordinate is going to be opposite because you want a reflection and the opposite of b will this give you the same distance from the x-axis as b.

So the transformation is this: (a,b)  -> (a,-b).

All this means is leave x the same and take the opposite of y.

F(-7,3)  -> F'(-7,-3)

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H(3,5) ->H'(3,-5)

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Answer:

b ) a^7/b^6 is the correct answer

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