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krok68 [10]
3 years ago
12

Jamal is studying the temperature changes in water as he moves it from the freezer to a Bunsen burner. He finds that the tempera

ture changes happen to behave in a sinusoidal manner. So, he develops a model to determine when the temperature will be at a peak and when it will be at a valley. He finds that at t = 4 minutes, the temperature reaches a maximum of 26° above freezing, and at t = 30 minutes, the temperature reaches a minimum of 10° below freezing. Which equation BEST models this situation?
A) y = 18cos(1/26(x - 4)) + 8
B) y = 8cos(1/26<(x - 4)) + 18
C) y = 18cos(pi/26(x - 4)) + 8
D) y = 8cos(pi/26(x - 4)) + 18
Mathematics
1 answer:
Marat540 [252]3 years ago
4 0
The correct answer is c)y=18cos(pi/26(x-4))+8
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Answer:

C and D

Step-by-step explanation:

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Kim wants to buy a car. Help Kim compute the monthly payment on a loan, given the loan amount, the annual percentage rate of int
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Answer:

The complete Python program to calculate the monthly payment on a loan with step by step explanation is given below.

Python Code with Explanation:

# get the loan amount from the user

LoanAmt=eval(input("Please enter the loan amount: "))

# get the annual interest rate from the user in percentage form

InterestRate=eval(input("Please enter the annual interest rate in percentage: "))

# get the number of months from the user

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Output:

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Please enter the annual interest rate in percentage: 15

Please enter the number of months: 12

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Bonus:

You can use this command to limit the digits after the decimal point

For example following code will limit to 2 digits after the decimal point.

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Answer:

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Steps to find the equation
1. Find the slope
2. Insert slope into the general equation
3. Find y-intercept
4. Insert -intercept into the equation found in step 2
And you get the equation of the line

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Find the slope
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2y - x = 4

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Rewrite into the form y = mx + c
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2y = x + 4
y = 1/2 x + 2

Slope = 1/2
Perpendicular slope = -2 (negative reciprocal)

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Insert slope into the equation
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y = mx + c
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Find y-intercept
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y = -2x + c
At point (1, 2)
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Insert y-intercept into the equation y = -2x + c
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y = -2x + 4

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Answer: y = -2x + 4
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