Answer D). 9 ft is correct
Height of the ball at a horizontal distance of 10 feet is 9 ft
Step-by-step explanation:
A ball is thrown and it follows a parabolic path. At each horizontal distance (x) the following equation models the ball’s height (y).
Y(x) = ![-0.02x^{2} +0.8x+3](https://tex.z-dn.net/?f=-0.02x%5E%7B2%7D%20%2B0.8x%2B3)
Question asked is " What will be height (Y) of the ball when X=10 ft "
Simply putting value of X in given equation
we get,
Y(x) = ![-0.02x^{2} +0.8x+3](https://tex.z-dn.net/?f=-0.02x%5E%7B2%7D%20%2B0.8x%2B3)
Y(x) = ![-0.02(10)^{2} +0.8(10)+3](https://tex.z-dn.net/?f=-0.02%2810%29%5E%7B2%7D%20%2B0.8%2810%29%2B3)
Y(x) = ![-0.02(100)} +8+3](https://tex.z-dn.net/?f=-0.02%28100%29%7D%20%2B8%2B3)
Y(x) = ![-2 +8+3](https://tex.z-dn.net/?f=-2%20%2B8%2B3)
Y(x) = ![9](https://tex.z-dn.net/?f=9)
<em>Therefore,</em> Height of the ball at a horizontal distance of 10 feet is 9 ft
Answer D. 9 ft is correct
Answer:
The percentage of workers not wearing the helmets is 5.3 %.
Step-by-step explanation:
A safety committee randomly examined 900 construction workers during their work, and found that 48 workers were not wearing helmets. Estimate the percentage of workers who do not wear protective masks during their working time with 98% confidence
total workers = 900
Not wearing helmet = 48
Percentage which are not wearing the helmets
=
%
1. 2.00/64=3.125 cents per oz
2. 7.50/256=2.930 cents per oz.
3. The best deal is at the whole sale
Answer:
none
Step-by-step explanation:
3−12+223−56=158
216−216=0
56+216=272
216+216=432
216−56=160
Brainliest?
Answer:
2(7y+19)
Step-by-step explanation:
14y+38=2(7y+19)