niayaxox
niayaxox
20-02-2017
Mathematics
contestada
need help with 5&6 please
Respuesta :
wolf1728
wolf1728
20-02-2017
For #6
x^2 - 8x -33 = 0
(x + 3) * (x - 11) = 0
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bcalle
bcalle
20-02-2017
# 5
h(t) = -16t^2 + 190
46 = -16t^2 + 190
subtract 190 from both sides
-144 = - 16t^2
divide both sides by -16
9 = t^2
square root both sides
3 = t
t = 3 seconds
# 6
f(x) = x^2 - 8x - 33
f(x) = (x - 11)(x + 3)
f(x) = (x - 4)^2 - 49 vertex (4,-49)
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