Aiko stands 5 m from a tree. At that distance, the angle of elevation from the ground to the top of the tree is 80°. Approximately how tall is the tree?

What is th additive inverse of h

Y=-99/4 when x=-11 and z=4. Find when x=2 and z=-8

List the factors of 28

Mobile takes 5 hours to travel 200 km going Upstream the return trip takes 4 hours going Downstream what is the rate of the boat in still water and what is the rate of the current

Factorise using the difference of two squares: I) 4x squared - (2x+3) squared

Which of the following is not a type of association? A) zero B) negative C) positive D) undefined

Which set of coefficients of the terms in the expansion of the binomial (x + y) 3 is correct?

Which is used by scientists as evidence that earths inner core is solid?

Arithmetic and geometric

P=q + 5 2p + 3p = - 20 linear equations