Answer: Nathen is 9 years old and Fred is 36 years old.
Step-by-step explanation:
set Nathen's age = x
set Fred's age = 4x (because he is 4 times as old as Nathen)
4x = x + 27
3x = 27
x = 9 (Nathen's age)
4x = 36 (Fred's age)
Answer:
y = |3x|
Step-by-step explanation:
I did the test. The answer is "Group X has less variability in the data."
This is C. cos Z = sin (90 - Y)
