Find the value of x that makes m || n. Explain.

What is the missing constant term in the perfect square that starts with x^2 -20x

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.