Tell whether the triangle with the given side lengths is a right triangle.

Find the area of the regular hexagon if a side is 20 cm.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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.