3 pipes take 12 hours
⇒ In 1 hour, the 3 pipes can fill 1/12 of the pool
2 of the pipes take 18 hours
⇒ in 1 hour, the 2 pipes can fill 1/18 of the pool
In 1 hour, the third pipe alone can fill :

Time needed :

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Answer: It will take 36 hours for the third pipe to fill the pool.----------------------------------------------------------------------------------------
Answer:
The answer to your question is the second option, both coordinates should be negative.
Step-by-step explanation:
The point Hassam plotted was (-0.5, -0.25). If he wanted to plot point (0.5, 0.25):
-First, he should have counted two squares to the right
- then one square up.
Because both coordinates are positive this point must be in the first quadrangle not in the third.
Part A
Correlation coefficient: -.99
This tells us that as time goes on (value of x increases) the area of the puddle goes down (value of y decreases)
Part B
y₂ - y₁
------- = slope
x₂ - x₁
9 - 15
--------
5 - 8
-6/-3 = 2
So the slope equals -2, regardless of the fact that we got 2 as an answer there, we know that it is a negative slope
Part C
The data represents causation because an increase in the value of x results in a decrease in the value of y, this shows an example of direct causation between x and y.
Answer:
D
Step-by-step explanation:
D is the correct answer. It is a cubic function