Difference between revisions of "2011 AMC 10A Problems/Problem 9"
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== Solution == | == Solution == | ||
− | We have a rectangle of side lengths <math>a-(-b)=a+b</math> and <math>d-(-c)=c+d.</math> Thus the area of this rectangle is <math> | + | We have a rectangle of side lengths <math>a-(-b)=a+b</math> and <math>d-(-c)=c+d.</math> Thus the area of this rectangle is <math>(a + b)(c + d) = \boxed{\textbf{(A)}\ ac + ad + bc + bd}</math>. |
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+ | ==Video Solution== | ||
+ | https://youtu.be/n0qUd4ukEF8 | ||
+ | |||
+ | ~savannahsolver | ||
== See Also == | == See Also == |
Latest revision as of 19:56, 17 November 2020
Contents
Problem 9
A rectangular region is bounded by the graphs of the equations and
, where
and
are all positive numbers. Which of the following represents the area of this region?
Solution
We have a rectangle of side lengths and
Thus the area of this rectangle is
.
Video Solution
~savannahsolver
See Also
2011 AMC 10A (Problems • Answer Key • Resources) | ||
Preceded by Problem 8 |
Followed by Problem 10 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
All AMC 10 Problems and Solutions |
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