Hace (a + b) años, tu edad era «a» veces la mía, pero hoy es solo «b» veces la mía.
¿Cuántos años tenía yo hace (a + b) años?
(exprese en función de a y b).

Which ordered pair (c, d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

Given: transversal t passed through parrallel lines r and s. prove: < 3 = < 6 < 4 = < 8what is the next step in the proof? choose the most logicsl approach