Answer:
3.14
Step-by-step explanation:
pie is 3.14 just multiply by 3.14
Answer:
Step-by-step explanation:
Para resolver este problea podemos comenzar con las identidades pares e impares, las cuales nos dicen que:
sen(-u)=-sen(u)
por lo que podemos reescribir nuestro problema como:
sen(-45°)=-sen(45°)
Luego podemos tomar los triángulos comunes (ver imagen adjunta).
y calcular la razón de seno en donde:
para obtener:
ahora podemos racionalizar la fracción para obtener:
Answer: 23 - 14 equals 9
Step-by-step explanation:
You can subtract with using positive numbers first than add the negative sign.
Answer:
a) 3/64 = 0.046 (4.6%)
b) 63/64 = 0.9843 (98.43%)
c) 1/64 = 0.015 (1.5%)
d) 1/4 = 0.25 (25%)
Step-by-step explanation:
in order to verify that the f(x) is a probability mass function , then it should comply the requirement that the sum of probabilities over the entire space of x is equal to 1. Then
∑f(x)*Δx = 1
if f(x)=(3/4)(1/4)^x , x = 0, 1, 2, ...
then Δx=1 and
∑f(x) = (3/4)∑(1/4)^x = (3/4)* [ 1/(1-1/4)] = (3/4)*(4/3) = 1
then f represents a probability mass function
a) P(X = 2)= f(x=2) = (3/4)(1/4)^2 = 3/64 = 0.046 (4.6%)
b) P(X ≤ 2) = ∑f(x) = f(x=0)+ f(x=1) + f(x=2) = (3/4) + (3/4)(1/4) + 3/64 = 63/64 = 0.9843 (98.43%)
c) P(X > 2)= 1- P(X ≤ 2) = 1 - 63/64 = 1/64 = 0.015 (1.5%)
d) P(X ≥ 1) = 1 - P(X < 1) = 1 - f(x=0) = 1- 3/4 = 1/4 = 0.25 (25%)
