Find the value of x. round to the nearest degree.
with sides 18 and 12

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively