True or false career clusters are 16 groups of occupation or career specialties that are similar or related to one another please HELP ME I WILL GIVE YOU BRAINLIEST

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.