Answer:
sometimes
Step-by-step explanation:
rational numbers can sometimes be natural since all natural numbers also rational but not all rational numbers natural
Answer:
-132
Step-by-step explanation:
Split the summation to make the starting value of
k equal to 1.
General Idea:
The volume of cylinder is given by
, where r is the radius and h is the height of the cylinder.
Applying the concept:
Step 1: We need to find the volume of full cylinder with the given dimensions using the formula.
Volume of full cylinder 
Volume of half cylinder 
Step 2: Let x be the number of minutes of filling the sand.
of sand filled every 15 seconds, there are four 15 seconds in a minute.
So volume of sand filled in 1 minute
.
of sand taken out of cylindrical vase every minute.
Net volume of sand filled in 1 minute = Volume of sand filled in the vase in one minute - Volume of sand taken out in 1 minute
Net volume of sand filled in 1 minute
Volume of sand filled in x minutes
.
We need to set up an equation to find the number of minutes need to fill half the volume in cylindrical vase.

Conclusion:
The number of minutes required for the base be half filled with sand is 57
Quotient means the answer of diving two numbers.
We can write the equation as: n/5 - 10 = 3
~Add 10 to both sides
n/5 - 10 + 10 = 3 + 10
n/5 = 13
1/5n = 13
1/5n * 5 = 13 *
n = 65
Hope This Helped! Good Luck!
Is there anyway you could reupload the picture or write it on paper so we can see the full question ? (: