charlene is a video game designer and wants to make sure that her game can be played on all types of screens. In order for the games to work on both devices with a standard aspect ratio and those with widescreen aspect ratios, the playable area of the games should an aspect ratio of 3:2. This means that the width is equal to 3/2 times the height. On one type of tablet , the playable area of the game on the screen is 54 square inches. Write and solve a system of equations to determine the dimensions of the playable are. A) width=6 height=9B) width=6 height=4C) width=13.5 height=9D) width=9 height=6
Accepted Solution
A:
The correct answer is D) width=9, height=6.
Let w represent the width and h represent the height. The first equation we write deals with the area of the screen: A=wh
Our playable area is 54, so we have 54=wh
Now we write the equation relating the width and the height. The width is 3/2 times the height; this means w=3/2h
We will use substitution to solve this. Substitute the value for w from the second equation into the first equation: 54=wh 54=(3/2h)h 54=3/2h²