Standard form of a linear equation

11/29/2011

Write the equation in standard form with integer coefficients
5x - y + 6 = 0

Ratio of replica to real

11/28/2011

What is the ratio of my replica to real size? My drawing of a billboard is 5 inches by 10 inches, and it is a replica of a billboard that is 10 feet by 20 feet... what is the ratio between these two sizes? How do I calculate that?

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Simplify

11/26/2011

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How do you simplify: - 5x³ - ( 4x - x³ )?

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A baseball diamond

11/24/2011

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A baseball diamond is a square 30 yd on a side. If you were on second base and you wanted to throw the ball to the catcher, who stands at home plate, how far would you have to throw the ball?

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Expression for perimeter of a rectangle

11/23/2011

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The width of a rectangle is 9 inches more than 4 times the length. If x represents the length, write an algebraic expression in terms of x that represents the perimeter of the rectangle. Simplify the expression.

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