In a right triangle the length of a hypotenuse is c and the length of 1 leg is a. Find the length of the other leg if: c=13
a=5

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

How to do this , and can some one explain

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?