Answer:
f(f(5)) = 11
Step-by-step explanation:

I hope that is useful for you
This question is quite simple really. They are basically asking you to combine like terms. You have two different figures with the variable y, so you just combine the them. It would then be 3x + 2y. You cannot simplify this equation any further since there is nothing to solve for or anymore like terms to combine.
Answer:
Your total balance is 154.
Step-by-step explanation:
You start with 120.
+30
-21
-21
+45
Hope that helps.
3+5=8
Answer:
2/8
Step-by-step explanation:
probability = total number of items ÷2
=8÷2
=2/£
Answer:
B) 75π cm³
Step-by-step explanation:
The volume of a cone is given by the formula ...
V = (1/3)πr²h
Your cone has r = 5 cm and h = 9 cm. Putting these values into the formula gives ...
V = (1/3)π(5 cm)²(9 cm) = 75π cm³