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.
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... more
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.