En una caja que contiene 4 corbatas negras 5 azules y 6 verdes. Se extraen al mismo tiempo dos corbatas al azar. ¿Cuál es la probabilidad de que ambas sean negras? cuel de estas son ? 15/3, 15/4, 16/210, 10/12

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.