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Gnesinka [82]
3 years ago
8

Please I need help. I need this ASAP, the screenshot is right below here.

Mathematics
1 answer:
Delicious77 [7]3 years ago
6 0

Answer:

no idea

Step-by-step explanation:

no idea jsbdkanxlanvsksnsp

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Some middle school students are asked if they play checkers and chess. The results of the survey are shown in the table.
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Scott likes to run long distances. He can run 20 km in 85 minutes. He wants to know how many minutes (m) it will take him to run
gtnhenbr [62]
You wanna 
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Just this please helppp
Murrr4er [49]

The height of the <em>water</em> depth is h = 14 + 6 · sin (π · t/6 + π/2), where t is in hours, and the height of the Ferris wheel is h = 21 + 19 · sin (π · t/20 - π/2), where t is in seconds. Please see the image to see the figures.

<h3>How to derive equations for periodical changes in time</h3>

According to the two cases described in the statement, we have clear example of <em>sinusoidal</em> model for the height as a function of time. In this case, we can make use of the following equation:

h = a + A · sin (2π · t/T + B)     (1)

Where:

  • a - Initial position, in meters.
  • A - Amplitude, in meters.
  • t - Time, in hours or seconds.
  • T - Period, in hours or seconds.
  • B - Phase, in radians.

Now we proceed to derive the equations for each case:

Water depth (u = 20 m, l = 8 m, a = 14 m, T = 12 h):

A = (20 m - 8 m)/2

A = 6 m

a = 14 m

Phase

20 = 14 + 6 · sin B

6 = 6 · sin B

sin B = 1

B = π/2

h = 14 + 6 · sin (π · t/6 + π/2), where t is in hours.

Ferris wheel (u = 40 m, l = 2 m, a = 21 m, T = 40 s):

A = (40 m - 2 m)/2

A = 19 m

a = 21 m

Phase

2 = 21 + 19 · sin B

- 19 = 19 · sin B

sin B = - 1

B = - π/2

h = 21 + 19 · sin (π · t/20 - π/2), where t is in seconds.

Lastly, we proceed to graph each case in the figures attached below.

To learn more on sinusoidal models: brainly.com/question/12060967

#SPJ1

5 0
2 years ago
Which of the following tables of values represents a function that increases more rapidly than the function graphed below?
hram777 [196]
Answer A. because it increases more rapidly
7 0
3 years ago
If something cost $60 and it has a markdown of 40% what is the sale price
umka2103 [35]

Answer:

Your total is now $36

Step-by-step explanation:

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and it will show that you saved $24

subtract $60 - $24

there's your answer.

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