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Lesechka [4]
2 years ago
14

A fishing club on the Restigouche River in Canada kept detailed records on the numbers of fish caught by its members between 188

0 and 1930. Average catch tends to be cyclic each decade with the average minimum catch of 0.9 salmon per day occurring in years ending with O an average maximum catch of ʼ salmon per day occurring in years ending with 5.t (Note: This exercise corresponds to the subsection Characteristics of a Sine Function and requires use of the formulas for average value, amplitude, period, and horizontal shift to construct sine models rather than curve-fitting using technology.) (a) Calculate the period and horizontal shift of the salmon catch cycle. Use these values to calculate the parameters b and c for a model of the form rx) = a sin(bx + c) + d, where x = 0 corresponds to the year 1880. (Round your answers to three decimal places.)
(b) Calculate the amplitude and average value of the salmon catch cycle amplitude average value salmon per day salmon per day (c) Use the constants from parts (a) and (b) to construct a sine model for the average daily salmon catch. (Round all numerical values to three decimal places.)
Mathematics
1 answer:
MrMuchimi2 years ago
4 0

Answer:a

Step-by-step explanation:

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What is the percentage decrease, if the price of a shirt is reduced from 800rupees to 640rupees?
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Decrease = Rs 800- Rs 640= Rs 160
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adam and betty purchased a printer together for $258. If adam paid $18 less than twice betty, how much money did Adam pay for th
LenKa [72]

Answer:

Step-by-step explanation:

Let A = Adam, B = Betty

Adam and Betty purchased a printer together for $258.

This means we can say A + B = 258.

We are also told Adam paid $18 less than twice Betty.

You can write this as:

Adam = 2 x Betty - 18

A = 2B - 18

Substitute "A" into the A + B equation and you get:

A + B = 258

2B - 18 + B = 258

3B - 18 = 258

Add 18 to both sides.

3B = 258 + 18

3B = 276

Divide both sides by 3 to find B

B = 276/3 = 92 (This means Betty paid $92).

Since the total that they paid together was $258.

This means Adam pays the Total - How much Betty paid

Adam = 258 - 92 = $166

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2 years ago
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A cell phone company is looking to place a new tower to service 3 cities. In order for it to best service each city, it needs to
omeli [17]

Answer:

  • circumscribed circle
  • The center of a circle circumscribing the triangle connecting the 3 cities will be equidistant from all three cities.

Step-by-step explanation:

The circumscribed circle or <em>circumcircle</em> of a polygon is a circle that passes through all the vertices of the polygon. The center of the circle, the circumcenter, is equidistant from all of the polygon's vertices.

The center is found at the point of intersection between the perpendicular bisectors of any two (non-parallel) chords of the circle. That is, <em>the perpendicular bisectors of any two of the sides of the triangle joining the cities will intersect at the circumcenter</em>.

The method of locating the center of the circle this way is simple and effective.

7 0
2 years ago
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Answer:


Step-by-step explanation:

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Hence in 60 days she has to complete ≥3 blankets

No of days she has to utilize for this will be ≥3(15)=45

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Let x be the no of days crocheted and y no of days skipped

Then x+y≤60

See the graph attached as x axis for days crocheted and y for days skipped

No of blankets can be either 3 or 4.


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Answer:

Step-by-step explanation:

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