A triangle has side lengths of (5.5x + 6.2y) centimeters, (4.3x + 8.3z) centimeters and (1.6z - 5.1y) centimeters. Which expression represents the perimeter, in centimeters of the triangle? *

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?