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elixir [45]
3 years ago
8

A tank that holds up 10 gallons. when its active, a drain empties water from the tank at a constant rate, when Jada first see th

e tank, it contains 7 gallons of water. three minute later the tank contains five gallons of water.
At what constant/rate is the amount of water changing in the tank?
Mathematics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

-2/3 gallon/minute

Step-by-step explanation:

In three minutes the water volume has decreased by 2 gallons (7 less 5 is 2).  The unit rate of decrease of the amount of water in the tank is thus:

- 2 gallons

------------------- = -2/3 gallon/minute

 3 minutes

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5/3÷7=_____<br>Answer in a fraction form<br><br>PLZ HELP ​
vfiekz [6]

Answer:

5/21

Step-by-step explanation:

5/3/7=?

so 5/3 *1/7=5/21

so 5/21 is your answer

8 0
3 years ago
What is this symbol called plz answer urgent​
Svetlanka [38]

AB is congruent to AC that is ur Answer

5 0
3 years ago
I need to solve this equation for my homework, I'm not good with frations and work would be useful 1/4(x-8)=3/4x
Ahat [919]
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7 0
3 years ago
Read 2 more answers
While building a snowman, a large snowball is created so that the radius is changing at the rate of 5 inches per hour. How fast
diamong [38]

Answer:

2000π in³/s

or 6283.2 in³/s

Step-by-step explanation:

dr/dt = 5  

volume of sphere is given as

v = (4/3)(π)r³

differentitate wrt r

dv/dr = 3×4/3 ×π×r²

dv/dr = 4πr²

put r = 10

dv/dr = 4π(10)²

dv/dr = 400π

by chain rule

dv/dt = dv/dr ×dr/dt

dv/dt = 400π× 5

dv/dt = 2000π in³/s

or dv/dt =6283.2 in³/s

7 0
3 years ago
Need help please! A=?
zubka84 [21]

Answer:

  m∠A ≈ 103°

Step-by-step explanation:

Enough information is shown for us to be able to use the Law of Sines to find the angle. That tells us ...

  sin(A)/a = sin(C)/c

  A = arcsin(a/c·sin(C)) = arcsin(26/6·sin(13°)) = arcsin(0.974788)

  A = 77.1° or 102.9°

The claim is that the figure is drawn to scale, so we can assume that A is an obtuse angle:

  m∠A ≈ 103°

__

<em>Additional comment</em>

The sum of angles A and B must be 180° -13° = 167°. Since angle A is the largest, it must be more than half this value, or more than 83.5°. That means, we must choose the obtuse angle for A, rather than the acute angle.

7 0
2 years ago
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