If m∠4 = (3x)° and m∠8 = (x + 40)°, what is the measure of ∠4? ∠4 and ∠8 are vertical.

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then