21/100 is the answer. Hope this helped!
Pharmaceutical companies prefers experimental studies to conducting surveys and observational studies because companies can manipulate or suggest methods easily to have good outcomes and they are able to directly observe the results. Experimental studies is a type of study in which a procedure and method is intentionally introduced.
<span>To find the area of a two dimensional triangle we multiply one half of the base width by the base height so lets start with finding the area of a two dimensional part of the triangular prism. </span>

When there is a - in front of an expression in parentheses, change the sign of each term in the expression to +

Calculate the LCM of denominators

Calculate the difference

Answer:
the answer is b wait I can also be c and d