1.47 Considere una población simple que sólo cons- ta de los números 1, 2 y 3 (un número ilimitado de
cada uno). De esta población podrían extraerse nueve
muestras diferentes de tamaño 2: (1, 1), (1, 2), (1, 3),
(2, 1), (2, 2), (2, 3), (3, 1), (3, 2), (3, 3).
Si la población consta de los números 1, 2, 3 y 4,
haga una lista de todas las muestras de tamaño 2
que puedan elegirse.
b. Si la población consta de los números 1, 2 y 3,
haga una lista de todas las muestras de tamaño 3
que puedan elegirse.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,