Mathematics, 04.02.2020 06:03 ayoismeisalex
Afootball is kicked into the air from an initial height of 3 feet. the height, in feet, of the football above the ground is given by s(t)=-16t^2+35t+3.
where t is time in seconds and t> =0. which is closest to the time when the football will be 20ft above the ground? ?
a) 2.72 seconds
b) 0.73 seconds or 1.46 seconds
c) 0.53 seconds
d) 0.53 seconds or 2.72 seconds
Answers: 1
Answer from: Quest
step-by-step explanation:
no, her answer is not correct. we square the lengths of all sides and then determine whether the pythagorean theorem holds here:
9² + 15² = 306. this is not equal to the square of the longest side ( that square being 395. answer c is correct.
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