Answer: 72 pesos.
Step-by-step explanation:
Supongamos que al principio tenias X, donde X representa la cantidad de dinero que tenias en un principio.
Gastaste:
X/3 en comida
X/8 en pasaje.
Entonces el gasto total es:
X/3 + X/8 = X*(1/3 + 1/8) = X*(11/24)
Entonces el dinero que te queda es:
X - X*(11/24) = X*(13/24) = 39 pesos.
X = (24/13)*39 pesos = 72 pesos
Al principio tenias 72 pesos.
Answer:
x^2 +2x +4
x^2 +2x +(2/2)^2-(2/2)^2+4
(x+1)^2-1+4
(x+1)^2+3=0
(x+1)^2= -3
(x+1)= ±√-3
Since a negative number cannot be square rooted,
there are no solutions to this equation.
Hope this helps:)
Answer: A. The value of his investment decreased by 16% during this time period.
Step-by-step explanation:
Here the initial amount = n
Final amount after 1 years = 0.84n
The total change in the initial amount = n - 0.84n = 0.16 n
= 
Thus, the amount is decreases by 16% in one year,
⇒ Option A is correct.
