X + 3y=18 3x + 9y=12

Parallel, perpendicular or coinciding

An mp3 player is on sale for 30% off the regular price of $39.98. How much is the discount? a. $11.99 b. $13.19 0 $13,33 d. $27.99

We have 3 broken glasses for every 500. Write this as a fraction and as a percent

Which is the best approximation for the solution of the system of equations? y=-2/5x+1 y=3x-2

What is the simplified expression for - 0.0576 (71.818x) ^2

I have a bag of 9 ordinary coins and 1 double headed one. i remove a coin and flip it three times. it comes up heads every time. what's the probability that i picked the double-headed coin?

One car traveling at 30 mph and another car traveling at 40 mph left from the same place at the same time and traveled in opposite directions.

Simplify the fraction.

C = 145º, b = 7, c = 33

The two islands shown below with the given areas have the same population. Which has the greater population density? Explain. The first island has an area of 486 mi squared and the second has an area of 532 mi squared.

Lee wong receive an annual salary of 65,000 today his boss inform him that he will be getting 3,000 raise the percent increase round to the nearest tenth