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3 years ago

The last question for my test help

Mathematics

1 answer:

alisha [4.7K]3 years ago

8 0

3 2/6

5/6*4=20/6

20/6= 3 2/6 OR 3 1/3

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A new online store charges all customers one price to download any song and another price to download any game. Jenna paid $20.5

OLga [1]

X songs
Y games

A) 8X + 3Y = 20.50
B) 4X + 5Y = 22.50

Multiplying equation B) by -2
B) -8X -10Y = -45.00 then adding this to
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Suppose you just received a shipment of twelve televisions. Three of the televisions are defective. If two televisions are rando

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Answer: The probability that both televisions work is 0.5625 .

The probability at least one of the two televisions does not work is 0.4375.

Step-by-step explanation:

Given : Number of televisions received in shipment= 12

Number of defective televisions received in shipment= 3

Then proportion of defective televisions = $\dfrac{3}{12}=0.25$

Using binomial probability formula, the probability of getting success in x trials is given by :-

$P(x)=^nC_xp^x(1-p)^{n-x}$

If two televisions are randomly selected, then the probability that both televisions work will be :-

$P(0)=^2C_0(0.25)^0(0.75)^2=(0.75)^2=0.5625$

The probability at least one of the two televisions does not work will be :-

$P(x\geq1)=1-P(0)=1-0.5625=0.4375$

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3 years ago

F(x) = x2 - 4x – 8,<br> Graph

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Answer:

-2x-8

2x= -8

x = -4

( x - 2 )(x + 2 )

x=2

x= -2

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3 years ago

HELP PLEASE, THANK YOU!

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