Determine el elemento 2,1 (a2) de la matriz X para que la ecuación C(AX+B)= l2 tenga solución. Considerando que son matrices no singulares de orden 2 e l2 es la matriz identidad de orden 2 y l2 = B - C
y A = 1 a b
con
a=2, b=-1, c=7, d=4
Redondee a dos cifras decimal

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?