Answer:
Read below
Step-by-step explanation:
a) 
b) 
(The reason both numerator and denominator can both be negative is because the negative cancel each other out and still simplify to 
)
The answer is c. 2 hours and 45 minutes
Answer:
Step-by-step explanation:
The order of a succession is a way that the terms (the first, the second, the third, etc.) can be distinguished according to a certain formation law or order criterion.
Example:
a¹/a²/a³/a⁴ And successively
In the order of a sequence you can assign any letter.
(a) It is leaking 18 liters per minute.
Explanation : From 15 minutes to 20 minutes, your starting point at 15 is 590 liters and at 20 you have exactly 500. Next you have 25 which is now at 410. So it's leaking 90 liters every five minutes, so of course dividing the two (90 ÷ 5) you get 18.
(a)² it increases for about the same time that it would decrease of course.
(b) The vat started at 860 liters before they started draining it.
Explanation : Well, all it takes is just working backwards, add 90 liters to the liters at 15 minutes and deduct five minutes from 15. Do this process until you arrive at 0. It's simple
V=2πrh
28.27=(2)(3.14)(1.5)h
h=28.27/(2)(3.14)(1.5)
h≈3
answer c. 3.0
