Answer:
<h2>x = 1, y = 3 → (1, 3)</h2>
Step-by-step explanation:
The volume of water that goes into the hose is the same as the volume of water that comes out the nozzle. This means the velocity is inversely proportional to the area. The area is proportional to the square of the diameter.
Taken together, these facts mean that if the diameter is divided by a factor of 3, the velocity is multiplied by a factor of 3^2 = 9.
Nozzle velocity = 3^2 * entering velocity
.. = 9 * (4 m/s)
Nozzle velocity = 36 m/s . . . . . . . . . corresponding to selection A
Answer:
60
Step-by-step explanation:
all of those rounded to the nearest ten is 60
The coefficient of the second term is 18.
What you do is you FOIL the terms:
<span>12+3(8+x)
= 12 + 24 + 3x
= 3x + 36</span>
