Un ingeniero civil a cargo de una obra contrata una cierta cantidad de obreros. Estima que, si le pagara S/ 1.400 a cada uno de los obreros, le faltarían S/ 8.000, pero si le pagara S/ 1.200 a cada uno, le sobrarían S/ 2.000. El número de obreros que contrató es...

Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

The trigonometric ratios sine and secant are reciprocals of each other