a.
To write: An expression for
An expression for
Given:
The diagonal of the screen on a laptop computer measures 15 inches. The ratio of the screen's width
Calculations:
The ratio of
Find the cross products and solve for
b.
To write: An equation that you can use to find
An equation that you can use to find
Given:
The diagonal of the screen on a laptop computer measures 15 inches. The ratio of the screen's width
Calculations:
Consider the following figure.
Apply the Pythagorean Theorem.
Substitute for
Simplify to get an equation for
c.
To solve: An equation from part (b).
Solution is
Given:
The diagonal of the screen on a laptop computer measures 15 inches. The ratio of the screen's width
Calculations:
For solving the equation, take the square root on each side.
Since height cannot be negative, reject the solution
d.
To find: Height, width, and area of the laptop screen.
The height of the laptop screen is
Given:
The diagonal of the screen on a laptop computer measures 15 inches. The ratio of the screen's width
Calculations:
The height of the laptop screen is
For finding the width, substitute
The width of the screen is
Since the screen is in the shape of a rectangle, its area is the product of the width and the height.
Therefore, the area of the screen is
Chapter 1 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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