Answer:
(3,7) is not a solution
Step-by-step explanation:
You fill in the values x=3 and y=7 in both equations and see if you end up with something that is true.
-5·3 - 2·7 = 23 is not true, because it simplifies to -29 = 23
no need to look further, but if you would, the second equation is also false:
3 + 4·7 = -19 is also not true.
The real solution by the way is (-3, -4).
9514 1404 393
Answer:
8000π mm^3/s ≈ 25,133 mm^3/s
Step-by-step explanation:
The rate of change of volume is found by differentiating the volume formula with respect to time.
V = 4/3πr^3
V' = 4πr^2·r'
For the given numbers, this is ...
V' = 4π(20 mm)^2·(5 mm/s) = 8000π mm^3/s ≈ 25,133 mm^3/s
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<em>Additional comment</em>
By comparing the derivative to the area formula for a sphere, you see that the rate of change of volume is the product of the area and the rate of change of radius. This sort of relationship will be seen for a number of different shapes.
Answer:
The average speed of the baseball is 26 m /s.
Step-by-step explanation:
Here, the total distance traveled by baseball = 114 meters
Time taken to cover this distance = 4.4 seconds
Now, 
So, average speed = 
and , 25.9 m/s is approximately 26 m/s.
Hence, the average speed of the baseball is 26 m /s.
255 is the answer because 143+86=229, 229+23 is 255
Good evening ,
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Answer:
Bar chart (graph)
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Step-by-step explanation:
Look at the photo below for the details,
:)
