Resuelve el siguiente sistema de ecuaciones de 2x2 por el método que tu quieras en tu cuaderno: 2x+y=7 2x-y=1 ¿Cuál es la solución de x y cual el de y? * A) X=3 Y=2

B) X=2 Y=3

C) X=-3 Y=-3

D) x=-2 y=-3​

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5