Two planes just took off from Salt Lake City, UT. The first plane is traveling 4 times as fast as the second plane. After traveling in the same direction for 5 hours, they are 1590 miles apart. What is the average speed of each plane? (Hint: Since they are traveling in the same direction, the distance between them will be the difference of their distances.)

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.

cluster sampling.

step-by-step explanation: