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A ball is dropped from a treetop 256 feet above the ground. How long does it take to hit the ground? (s = 16t^2) 4 seconds 8 seconds 16 seconds
asked
Jan 12, 2017
Mathematics
high-school
2
answers
3
votes
145k
views
The sum of two numbers is 30. The sum of the greater number and three times the lesser number is 54. Find the numbers.
asked
Feb 9, 2016
Mathematics
high-school
1
answer
2
votes
36.0k
views
Given the equation: y=−2 x2 −12x−23 Find the parabola's vertex.
asked
Apr 8, 2015
Mathematics
high-school
2
answers
2
votes
46.5k
views
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