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H = -4.9t +27t +2.4 ( h is in meters ) For how long is the balloon more than 3m high?
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Jun 3, 2016
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H = -4.9t +27t +2.4 ( h is in meters )
For how long is the balloon more than 3m high?
Mathematics
middle-school
Doncadavona
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-4.9t+ 27t= 22.1t A=22.1t + 2.4 (you cant add it any farther because they dont have a varible in common)
Sarwar Ahmed
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Jun 3, 2016
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Sarwar Ahmed
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Plug in 3 for the height:
3 = -4.9t + 27t + 2.4
Combine like terms:
3 = 22.1t + 2.4
Subtract 2.4 to both sides:
0.06 = 22.1t
Divide 22.1 to both sides:
t = .00271493213
Dave Smylie
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Jun 7, 2016
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Dave Smylie
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