Necesito resolver un problema un estudiante tiene que contestar 8 de 10 preguntas a) cuantas maneras de escoger tiene b) cuantas si tiene que contestar las tres primeras c) cuantas si tiene que contestar por lo menos cuatro de las primeras

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.

Stacey filled her 1/2 cup of measuring cup seven times to have enough flour for a cake recipe how much flour does the cake recipe calls for