An archaeologist in turkey discovers a spear head that contains 32 of its original amount of c-14

Aman steps out of a plane at a height of 4,000m above the ground falls 2,000m very quickly and then opens his parachute and slowly falls the remaining 2000m to the ground what height above the ground would be the best choice for a reference point

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Find the value of x. give reasons to justify your solutions! h ∈ ig