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kotegsom [21]
3 years ago
14

Let a function y represent the water level in a harbor measured in meters, and let x represent the number of hours

Mathematics
1 answer:
svp [43]3 years ago
6 0

Answer:

2.2 hours

Step-by-step explanation:

The equation to graph is

4.5cos(4pi/25 x)+15

Find amplitude by subtracting min from max and dividing it by two. a=4.5

Find vertical shift k by finding the midline. Either add 4.5 to 10.5 or subtract 4.5 from 19.5. k = 15

The period is given to be 12.5. Use formula 2pi/b = period to find b. b = 4pi/25

Put the equation into graphing calculator and find what x equals when the graph is 17 (for the first time)

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If F(x) = 4%-3, which of the following is the inverse of F(x)?
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I assume you meant to type x for %.

If not, basically back-substitute at the end of the solution.

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2 years ago
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Alika [10]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

Let's find the slope (m) :

  • \dfrac{y2 - y1}{x2 - x1}

  • \dfrac{16 - 11}{9 - 6}

  • \dfrac{5}{3}

slope of given line is 5/3

now, let's plug the value of coordinates of a point lying on the line ( for example : (6 , 11) and slope (m) to find the y - intercept (c) :

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value of y - intercept (c) = 1, so our equation will be :

  • y = mx + c

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2 years ago
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