Triangle ABC is dilated with a scale factor of k and a center of dilation at the origin to obtain triangle A'B'C'. What is the scale factor?

3(10x-y)-5(x-y^2) need this solved asap

What is the value of x in the following equation? -3x-2=2x+8

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.