1.) x - 4y = 11
2.) 5x - 7y = -10

what do x and y equal when you solve this with elimination?

Sara bought a pair of pants that were on sale for 30 percent off of the original price. if the original price of the pants was $29, what was the sales price of the pants?

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).

What is sin 7x/4 ? i need on this urgent trig