Answer:
A bird drops a stick to the ground from a height of 80 feet. The equation 0=−16x2+64x+80 gives the number of seconds that have passed when it hits the ground. After about how many seconds did the stick hit the ground?
Step-by-step explanation:
h = -16t^2 + 80 Stick hits the ground when h = 0:
0 = -16t^2 + 80
16t^2 = 80
t^2 = 80/16 = 5
t = POSITIVE root 5 (due to the real world nature of the problem)
t approximately 2.236 seconds.
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Graph is a downward opening parabola with h-intercept of 80, t-intercept(s) of sqrt(5), - sqrt(5)
Symmetric about h-axis, though I would only graph on the right side of the h-axis since
that is where t >= 0.
The answer is 3 cm. You just have to add the sides you know (6 and 8) and subtract that from the perimeter (18)
Answer:
The number of Apples did Ravi have at first is 125 .
Step-by-step explanation:
Let the number of Apples did Ravi have at first = x
The Apples which is sold by Ravi = 
of x
So, remainder now = x - of x = 
of x
The apples given to his friend = 
of x
I.e The apples given to his friend = 
of x
Now, The remaining Apples did Ravi have = 50
∴ According to question
of x - of x = 60
Or, 
of x = 60
Or, 
of x = 60
∴ x = 
= 125
Hence The number of Apples did Ravi have at first is 125 . Answer
I think I just had a stroke trying to read this
