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jenyasd209 [6]
3 years ago
14

Patti's Pet Palace has an 85-gallon fish tank. When it needs to be cleaned, it can be drained at a rate of 2 gallons per minute.

Assuming the tank was full, and x represents the number of minutes the tank has been draining, which of the following equations represents the amount of water in the tank after x minutes?
A.
y = 85 - 2x
B.
y = 2x + 85
C.
y = 2x - 85
D.
y = 85x - 2
Mathematics
2 answers:
Leto [7]3 years ago
8 0
C

•••••••••••••••••••
QveST [7]3 years ago
6 0

Answer:

c y=2x-85 I think so please check if I'm wrong

I think c

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Answer: Choice A)  3 \sqrt{26}

==================================================

Work Shown:

\text{The two points are } (x_1,y_1) = (6,7) \text{ and }  (x_2,y_2) = (3,-8)\\\\d = \text{Distance between } (x_1,y_1) \text{ and } (x_2,y_2)\\\\d = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2} = \text{Distance Formula}\\\\d = \sqrt{(6-3)^2+(7-(-8))^2}\\\\d = \sqrt{(6-3)^2+(7+8)^2}\\\\

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When going from 234 to 9*26, the idea here is to factor where one factor is the largest perfect square possible. That way we can use the rule \sqrt{x*y} = \sqrt{x}*\sqrt{y} to break up the root and simplify.

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