Www. is your answer. Hope I could help
Answer:
10.375
Step-by-step explanation:
To find the mean, you need to add up all of the numbers and then divide by the amount of numbers.
4 + 5 + 8 + 12 + 12 + 13 + 14 + 15 = 83
83 ÷ 8 = 10.375
You can easily do this yourself. It takes more effort to create the question. Just multiply 22.854 by 5 then divide by 4 = 28.5675.
X² - x - 20
x² -5x+4x - 20
x(x-5) +4(x-5)
(x+4) (x-5)