6/8. Divide by 2
3/4. Tadaaa
In order to divide, you need to find the reciprocal of 4/15 and multiply it by 2/3. So, 2/3*15/4
The answer is 5/2
H(t) = -16(t^2) + 64t
roots:
0 = -16t^2 + 64t
0 = t^2 - 4t
0 = t(t-4)
t=0 and t =4
The symmetry axis is at the middle of the two roots: t = (0+4)/2
That time (t=2) is what it takes the object to reach the maximum height.
Answer: t = 2; it takes 2 seconds to reach the maximum height and 4 seconds to fall back to the ground
Answer: 5/6
Explanation: First, find a common denominator of 6. Multiple 2 and 3 times 2 to get 4/6. Then you just add the numerator. This gives you 5/6.
Answer:
there are 97 + 47 + 77 = 221 creatures from Earth in the alien spaceship.
the probability that a human being is chosen at random = 77 / 221 = 0.3484 = 34.84%
the probability that a chicken is chosen at random = 97 / 221 = 0.4389 = 43.89%
the probability of choosing a cow at random = 100% - 34.84% - 43.89% = 21.27%
