03/20/16

#### Acomputer keyboard is 11 in. longer than it is wide. If the length doubled and 2 in. added to the width, area increase by 198 in . What are the length and width

Please help me with this problem!

#### A chemist has one solution that is 25% acid and a second that is 50% acid. How many liters of each should be mixed to get 10 L of solution that is 40% acid?

I need to solve this by using a system of equations.

01/20/15

#### If triangle ABC...

I think my math teacher asked a bogus question.
If triangle ABC is translated down 1 unit and then rotated so that point A' is located at (-2,1), where will point B' be located.. the...
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11/13/14

#### Find the number by writing a system of equations and using elimination to solve the equations.

The sum of the digits of a two-digit number is 11. If the digits are reversed, the new number is 45 more than the original number.

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