The first three terms in the expansion of (1+kx)^n, in ascending powers of x, are 1-4x+15/2 ×x^2. Find k and n.​

the answer is a

step-by-step explanation:

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

what are the