X and y vary inversely, and 32 is the constant of proportionality find the value of x when y= 2.5

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Aculture started with 2,000 bacteria. after 8 hours, it grew to 2,400 bacteria. predict how many bacteria will be present after 19 hours . round your answer to the nearest whole number. p=ae^kt