Select the direction that this parabola opens.
y=-x^2/20
a) up
b) down
c) left
d) right

What basic trigonometric identity would you use to verify that sin x cos x tan x =1-cos^(2)x?

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?