Add using a number line.
1 answer:
Please refer to the attached image.
-2/5, 4/5 and -2/5 + 4/5 have been marked in red in the image
The points marked on the number line are separated by a distance of 1/5.
So when you add 4/5 to -2/5 you need to move 1/5 4 times (4/5 = 4 x 1/5) towards the right to reach the SUM.
Based on this, the sum of -2/5 and 4/5 is 2/5, and has been highlighted in the image.
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Step-by-step explanation:
Given that,
The function that shows the height of a baseball after t seconds is given by :
....(1)
Part (A).
When the baseball hits the ground,
H(t) = 0
So,
After 5 seconds the baseball will hit the ground.
Pat (B)
For maximum height, put dH/dt = 0
So,
Put t = 2.34 s in equation (1).
Hence, this is the required solution.