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3 years ago

I really don't understand this! Can someone give an explanation to me?

Mathematics

1 answer:

Pani-rosa [81]3 years ago

8 0

Step-by-step explanation:

Total number of Black cards is 26

Total number of cards having a ten is 4 out of which 2 are red

Number of favourable outcomes=28

TOTAL number of possible outcomes =52

Therefore the probability = 28/52 = 7/13

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Rectangle JKLM with vertices J(-3,2), K(3,5), L(4,3), M(-2,0) translation please

Wewaii [24]

Answer:

NOT! (10, 1)

Step-by-step explanation:

3 0

3 years ago

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. The m

marshall27 [118]

Answer:

1. 0.0000454

2. 0.01034

3. 0.0821

4. 0.918

Step-by-step explanation:

Let X be the random variable denoting the number of passengers arriving in a minute. Since the mean arrival rate is given to be 10,

$X \sim Poi(\lambda = 10)$

1. Requires us to compute

$P(X = 0) = e^{-10} \frac{10^0}{0!} = 0.0000454$

2. We need to compute $P(X \leq 3) = P(X =0) + P(X =1) + P(X =2) + P(X =3)$

$P(X =1) = e^{-10} \frac{10^1}{1!} = 0.000454$

$P(X =2) = e^{-10} \frac{10^2}{2!} = 0.00227$

$P(X =3) = e^{-10} \frac{10^3}{3!} = 0.00757$

$P(X \leq 3) =0.0000454+ 0.000454 + 0.00227 + 0.00757 = 0.01034$

3. The expected no. of arrivals in a 15 second period is = $10 \times \frac{1}{4} = 2.5$ . So if Y be the random variable denoting number of passengers arriving in 15 seconds,

$Y \sim Poi(2.5)$

$P(Y=0) = e^{-2.5} \frac{2.5^0}{0!} = 0.0821$

4. Here we use the fact that Y can take values $0,1, \dotsc$ . So, the event that "Y is either 0 or $\geq$ 1" is a sure event ( i.e it has probability 1 ).

$P(Y=0) + P(Y \geq 1) = 1 \implies P(Y \geq 1) = 1 -P(Y=0) = 1 - 0.0821 = 0.918$

3 0

3 years ago

0.000360 A = _______ μA

alukav5142 [94]

Answer: 0.000360 A = 360 μA

Explanation:
Method 1 (FAST):
The micro (μ) is equal to $10^{-6}$ . It means that we have to move the decimal point 6 times to the right as the power of 10 is MINUS 6. Hence the answer is 360μA.

Information: If the power of 10 were POSITIVE 6 (incase of Mega), we have to move the decimal point 6 times to the LEFT.

Method 2:
Divide 0.000360 A by $10^{-6}$ , since The micro (μ) is equals to $10^{-6}$ .
 $\frac{0.000360}{10^{-6}}$ μA = 360 μA

3 0

4 years ago

Read 2 more answers

How many zeros will be in the product of 7 x 5000

zepelin [54]

Three zeros will be the product

3 0

3 years ago

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Is 6 a factor of 81 yes or no

topjm [15]

To test whether it's a factor:

-- Divide the big number by it.     81 / 6 = 13.5 .

-- If the quotient is a whole number,
   then the small number is a factor
   of the big number. 13.5 is not a whole number.

-- If the quotient is not a whole number,
   then the small number is NOT a factor
   of the big number. 6 is NOT a factor of 81 .

8 0

3 years ago

Read 2 more answers