asylvester1105 asylvester1105

05-05-2018
Mathematics

contestada

A technician is launching fireworks near the event of a show. Of the remaining 11 fireworks, 4 are blue and 7 are red. If she launches 6 of them what’s the probability that 2 of them will be blue

Respuesta :

konrad509 konrad509

17-07-2018

[tex] \displaystyle
|\Omega|=\binom{11}{6}=\dfrac{11!}{6!5!}=\dfrac{7\cdot8\cdot9\cdot10\cdot11}{2\cdot3\cdot4\cdot5}=462\\
|A|=\binom{4}{2}=\dfrac{4!}{2!2!}=\dfrac{3\cdot4}{2}=6\\\\
P(A)=\dfrac{6}{462}=\dfrac{1}{77}\approx1\% [/tex]

Answer Link

Otras preguntas

Instruction 1: Name the part of speech of each italicized word in the following sentences, giving in each case your reason for the classification: 1. He still l

A(n) _____ is a web-based meeting place for friends, family, co-workers, and peers that lets users create a profile and connect with other users for a wide rang

when 0.876 g of CH4 goes through combustion in a container submerged in 2.0L of water, the water (c=4.184 J/g (C)) increases in temperature by 2.1 C. What is th

The portal vein is not considered a true vein because it does not empty into the IVC. Instead, it branches to venules that empty into the liver. The capillaries

Given the graph of y=f(x), solve for f(x)=3, if there are multiple answers enter in the form x=a,b

18. A circuit contains a 20 µH and a 60 µH inductor connected in parallel. These two inductors are in series with a 1,000 £2 resistor. The circuit has a source

A nurse is caring for a client who is asking about the technique of effleurage and its use in labor and delivery. Which of the following responses should the nu

What is the name of this compound?

Create arguments from the point of view of Ralph, Jack, and Piggy. In the opinion of the character, was Simon’s death an accident? Outright murder? Was it anyon

Find the value of the expression vw × 2 × u − 20 for u = 2, v = 3, and w = 2.

Q&A Education