Assuming Earth's gravity, the formula for the flight of the particle is:
s(t) = -16t^2 + vt + s = -16t^2 + 144t + 160.
This has a maximum when t = -b/(2a) = -144/[2(-16)] = -144/(-32) = 9/2.
Therefore, the maximum height is s(9/2) = -16(9/2)^2 + 144(9/2) + 160 = 484 feet.
Answer:
C
Step-by-step explanation:
Rectangle base, tiny triangle sides, but rectangle top
Can you write out the question or is there a diagram?
Answer:
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Step-by-step explanation:
x= total minutes -4 the 1st 4 minutes are included in the .30
total cost = .3 + .18 x
3 = .3 +.18 x
subtract .3 from each side
2.7 = .18x
divide by .18 on each side
2.7/.18 = x
15 = x
x = total minutes -4
add 4 to each side
15+4 = total minutes
they can talk 19 minutes
