What is the perimeter of a triangle whose side lengths are x2+4, 2x−1, and 5x?

What are the exclude value of mn+3m

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?