He ido al supermercado y he comprado 2 tarros de café de 250 gr. y 3 kilos de azúcar. por todo esto pagué $4500, la semana anterior fui al mismo supermercado y compré los mismos productos , pero 4 tarros de café y kilos de azúcar y cancelé $ 6800. ¿ Cuánto cuesta 1 tarro de café y 1 kilo de Azúcar?

What graph represents an even function

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

4. jake needs to score in the top 10% in order to earn a physical fitness certificate. the class mean is 78 and the standard deviation is 5.5. what raw score does he need? z value for top 10% =1.282 how do i get the z value? what is the equation for this? raw score =mean+z*sd = 78+1.282*5.5 = 85.051