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MTH133-0902B-32 College Algebra

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MTH133-0902B-32 College Algebra
Assignment Name: Unit 2 Discussion Board
Deliverable Length: 2-3 paragraphs
Details: Library Assignment

Measure the height of your computer monitor to the nearest tenth of a centimeter or sixteenth of an inch. Measure the width of your monitor as well. Use the Pythagorean theorem to find the length of the diagonal of your monitor.

In your post, include the height, the width, and the calculations needed to determine the length of the diagonal of your computer monitor. After you have calculated the approximate length using the Pythagorean theorem, use a measuring device to measure the length of the diagonal of your monitor. Was your measurement close? Why might the measurements not be exactly the same?

Typing hint: Type Pythagorean theorem as a^2 + b^2 = c^2. Do not use special graphs or symbols because they will not appear when pasted to the discussion board.

Part 2: Using the Library, web resources, and/or other materials, find a real-life application of a quadratic function. State the application, give the equation of the quadratic function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the corresponding y for each. State, in words, what each x and y means in terms of your real-life application. Please see the following example. Do not use any version of this example in your own post. You may use other variables besides x and y, such as t and S depicted in the following example, but you may not use that example. Be sure to reference all sources using APA style.

Typing hint: To type x-squared, use x^2. Do not use special graphs or symbols because they will not appear when pasted to the Discussion Board.

When thrown into the air from the top of a 50 ft building, a ball's height, S, at time t can be found by S(t) = -16t^2 + 32t + 50. When t = 1, s = -16(1)^2 + 32(1) + 50 = 66. This implies that after 1 second, the height of the ball is 66 feet. When t = 2, s = -16(2)^2 + 32(2) + 50 = 50. This implies that after 2 seconds, the height of the ball is 50 feet.

In your own words, please post a response to the Discussion Board and comment on other postings. You will be graded on the quality of your postings.

Points Possible: 50
Date Due: Sunday, Jun 21, 2009
Objective: Use polynomial and rational functions.
Apply critical thinking skills to the content of the course.

Submitted Files: Discussion Board
Score: N/A
Instructor Comments: No comments have been made

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Solution Preview

Dear student,

Please find the solution properly described below.
Hope this helps.

The height of my monitor comes out to be 35 cm and width is 40 cm.

The diagonal of the monitor can be calculated using the Pythagorean Theorem :

(Diagonal)^2 = (Height)^2 + (Width)^2

(Diagonal)^2 = (35)^2 + (40)^2

(Diagonal)^2 = 1225 + 1600

(Diagonal)^2 = 2825

Diagonal = sqrt(2825)

Diagonal = 53.1507 cms.

When measured using a measuring device the ...

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