SQRT is a parallelogram. If m∠SQR = 108°, which of the following statements is true? quadrilateral SQRT has diagonals QT and SR that intersect at point U

m∠SQU = 72°
m∠QRT = 108°
m∠QST = 72°
m∠RQU = 54°

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).

Ineed with angles and the measure of them i have abc a is 65 and b is (3x-10) and c is (2x) find the value of x

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).