simplify the expression sin20°cos40° + cos20°sin40°
75+57=
(3.06202+1)^2=4p(10.05-8.8)
cos y dy/dx = 2 sin^2 x cos x
x-y-z=1
3x-2y+2z=3
2x-y+3z=-1
cos y dy/dx = 2sin^2 x cos x
identify the values of a,b,c in the quadratic equation 8x^2-4x+3=6x-5 with a<0
what is 420 before adding 15%
James can cycle 0.7 km in one minute.
a How far will he travel in 20 minutes?
b How long will it take him to travel 26.6 km?
