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avanturin [10]
4 years ago
6

A tank can be filled by three pipes separately in 20,30,and 60 minutes respectively. In how many minutes can it be filled by the

three pipes acting together
Mathematics
1 answer:
vovikov84 [41]4 years ago
5 0

Answer:

Step-by-step explanation:

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After 4,000 gallons of water were added to a large water tank that was already filled to 3/4 of its capacity, the tank was then
dangina [55]

Answer:  The correct option is

(E) 80,000.

Step-by-step explanation:  Given that after adding 4,000 gallons of water to a large tank that was already filled to \dfrac{3}{4} of its capacity, the tank was then at \drac{4}{5} of its capacity.

We are to find the number of gallons of water that the tank hold when filled to capacity.

Let the tank can hold x gallons of water when filled to capacity.

Then, according to the given information, we have

\dfrac{3}{4}x+4000=\dfrac{4}{5}x\\\\\\\Rightarrow \dfrac{4}{5}x-\dfrac{3}{4}x=4000\\\\\\\Rightarrow \dfrac{16-15}{20}x=4000\\\\\Rightarrow x=4000\times20\\\\\Rightarrow x=80000.

Thus, the required capacity of the tank is 80,000 gallons of water.

Option (E) is CORRECT.

4 0
4 years ago
Please help! (listing BRAINLIST and giving points) ​ :)​
NikAS [45]

Answer:

Tan B = 12/5

Sin B = 12/13

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Step-by-step explanation:

sine B =  opposite (12)/hypotenuse (13)

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Cosine B = adjacent/hypotenuse

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Tangent B = opposite/adjacent

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Here is a picture that can always help you with the three trig ratios.

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3 years ago
Algebra 2B U2 L6 Functions Operations Practice #1-3
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Answer:

answers are 1d 2a 3 s just took the test

Step-by-step explanation:

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3 years ago
Tiffany sold 4 paintings in 3.5 months. Which rate represents this situation? A.3.5paintings/4months B.14months/4paintings C.4pa
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Yea  it is C

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What is 90 words in 2 minutes as a unit rate
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Levi saved 3/5 of the amount he needs to buy a 75 dollar video game. he earns 7.50 per hour working at the pizza shopping town how many hours will he need to work to pay for the rest of the game show all of your work to solve this problem explain the Steps you used! thank you 6th grade form please

Step-by-step explanation:

3 0
3 years ago
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