Answer:
Step-by-step explanation:
1/2 (n^3 - 1)
the difference means subtract
Answer:
The twentieth term is 50.
Step-by-step explanation:
The equation that describes the arithmetic sequence describes it's "general term", which means that all the numbers in that sequence must follow that equation. For instance, if we want to find the first term of the sequence we must make a = 1 and we have:
a1 = 3*1 - 10
a1 = -7
Therefore to find the twentieth term we need to make n equal to 20. This is done below:
a20 = 3*20 - 10
a20 = 60 - 10
a20 = 50
The twentieth term is 50.
ANSWER: The expression that represents the volume of the cone written in terms of π is: 18π in^3
Answer:
31.5
explanation if you need it -
b3 + y
when b = 3 and y= 4.5
b x b x b + y
1, substitute the values
3x3x3 + 4.5
27+ 4.5
31.5
Answer:
16
Step-by-step explanation:
