The sum of the digits of a 2- digit number is 13. When we interchange the digits ,resulting new number is 9 less than the original number. What is the original number?

What is the product of the radical expression. (7-2square root) (8+2 square root)

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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°.