At a pet store, one fifth of the animals are cats and three-fourth are fish. There are 40 animals at the pet store. How many are
mot cats or fish? Show your thinking
1 answer:
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"how long..." is asking for time (t). "The amount of time spent in the air" is the time from when the ball was kicked (0 seconds) to the time it landed on the ground. Need to find the x-intercepts (one will be negative which will be invalid). You can do this by factoring ... <em>or by using the quadratic formula.</em> With the equation you provided, it is not factorable, so you must use the quadratic formula.
h = -16t² + 60t + 3
a=-16 b=60 c=3
or
or
t = -0.05 or t = 3.8 <em>disregard the negative</em>
Answer: 3.8 seconds