Answer:
D. 108 liters
Step-by-step explanation:
Given that the leak is ;
5 drops = 5 minutes
?= 4 weeks
Find number of hours in 4 weeks
1 week=7days
4 weeks=?--------------cross multiply
4×7=28 days
1 day=24 hours
28 days=?--------------cross multiply
28×24=672 hours
Hour= 60 minutes
672 hours=?
672×60=40320 minutes
Finding the leakage in 4 weeks
80 drops= 5 minutes
?=40320 minutes------------cross multiplication
(40320×80)÷5 =645120 drops
Finding the liters of water wasted in 4 weeks
60 drops of water= 10 milliliters
645120 drops of water=?-------------cross multiply
(645120×10)÷60 =107520 milliliters
But you know
1 milliliter=0.001 liters
107520 milliliters=?-----------cross multiply
107520×0.001
=107.52 liters
=108 liters
Answer:
<u>The answer is the option B</u>

Step-by-step explanation:
we have

Group terms that contain the same variable

Combine like terms


Answer:
Its A
Step-by-step explanation:
A or area will increase as r increases.
r^2 = r×r which means the r value is doubling increasing the area
Answer:


Step-by-step explanation:
Given (Omitted from the question)



Solving (a): 
This is calculated using:


<em>We used Total - 1 because it is a probability without replacement</em>
So, we have:





Solving (b) 
This is calculated as:







