Una cajera tiene 21 vellones de diez menos que monedas de cinco y 15 pesetas más que monedas de cinco, para un total de $12.05. Determina cuántas monedas de cinco, vellones de diez y pesetas tiene.
a) 20, 12, 19
b)28, 4, 40
c)26, 5, 41
d)21, 9, 42

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

Ablock of wood is a cube whose side is x in. long. you cut off a 1-inch thick piece from the entire right side. then you cut off a 3-inch thick piece from the entire top of the remaining shape. the volume of the remaining block is 2,002 in3. what are the dimensions of the original block of wood?

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab