The answer is D.
To find the mean you add all the numbers together and divide them by how many numbers there are.
22 + 37 + 49 + 15 + 72 = 195
195/5 = 39
Therefore, the answer is 39.
Assuming that the equations are (x+7) and (3x-8) because the first equation does not have a sign these are the steps. When you multiply you will get 3x^2+21x-8x-56. After this you will simplify and you will get your final answer which is 3x^2+13x-56. Also if I used the wrong equations please let me know and I can help you with the correct ones.
Answer:
90 degrees
Step-by-step explanation:
its a 45-45-90 triangle
