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UNO [17]
3 years ago
5

Water flows through a pipe of diameter 4cms with a velocity of

Mathematics
1 answer:
MissTica3 years ago
4 0

Answer:

  1.28 m

Step-by-step explanation:

The speed at which water rises in the tank is proportional to the speed of the water in the pipe and inversely proportional to the ratio of the tank area to the pipe area.

The ratio of tank area to pipe area is the square of the ratio of their diameters:

  ((150 cm)/(4 cm))² = 1406.25

Then the rate of rise of water in the tank is ...

  (0.5 m/s)/(1406.25)

After 1 hour = 3600 seconds, the height of the water will be ...

  rise = (time)(rate of rise)

  (3600 s)(0.5 m/s)/1406.25 = 1.28 m

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A truck that can carry no more than 6500 lb is being used to transport refrigerators and upright pianos. Each refrigerator weigh
anyanavicka [17]

Answer:

Equation: 300x+425y= 6500 (if you assume that you would get an exact total)

Answer: Yes, 11 refridgerators and 9 pianos will overload the truck because 11x300=3,300 and 9x425=3,825 which in total equals 7,125, which is way too much for the truck.

An equation that works: 300(10)+425(8)=

Step-by-step explanation:

If each refrigerator is 300 pounds and we need to see if 11 would fit on the truck, multiply 300 times 11 which equals 3,300. Next repeat the same step but for the pianos… 425 times 9 which equals 3,825 now you add. You should get 7,125, meaning this ratio is way to large for the truck to carry.

Since this does not work we should try take away one of each. So let’s say the new rati is 10 refrigerators to 8 pianos. We would repeat the same steps from above. 10x300=3,000       8x425=3,400

If we add these, we get 6,400 so the final expression would be 300(10)+425(8)=6,400 which would be the closest the the most you can transport on the truck.

Sorry if this was not the answer you were looking for, I may have misinterpreted the question.

6 0
2 years ago
Which inequality does the graph represent?
Bad White [126]

Answer:

The answer is

x < -1

Step-by-step explanation:

I hope it helps!

3 0
2 years ago
How do you solve this problem
dmitriy555 [2]

Answer:

4.5 in

Step-by-step explanation:

IT si 4.5 inches because the scale factor is 1 inch to 4 feet, and 18/4 = 4.5 inches.

5 0
2 years ago
Please help me with #1 &amp; #2! thxs
taurus [48]

the answer for number 1 is

10,962,500,000

5 0
3 years ago
Solve for x, in the picture below
MrRissso [65]
<h3>Given:</h3>

angle CED = 45°

angle EDC = x

angle DCE = 2x

<h3>To Find:</h3>

The value of x.

<h3>Angle Sum Property:</h3>

The sum of all the Interior Angles of a triangle is 180°.

<h3>Solution:</h3>

x + 2x + 45° = 180°

or, 3x = 180° - 45°

or, 3x = 135°

or, x = 135/3 = 45°

<h2>Answer:</h2>

The value of x is 45°.

8 0
3 years ago
Read 2 more answers
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