Answer:
68
Step-by-step explanation:
Answer:
z= -1
Step-by-step explanation:
Answer:
x^2 +9x +1
Step-by-step explanation:
(5x-2+3x^2)+(4x+3)
Writing in decreasing order so we can combine like terms
3x^2 +5x+4x-2+3
Add and subtract like terms
3x^2 +9x +1
False, the range is just determined by minising the lowest from the highest, but the variables can still get you the same mean, which can lead to the same standard deviation