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bonufazy [111]
3 years ago
5

Help please!

Mathematics
2 answers:
Helga [31]3 years ago
5 0
The probability is P(King) * P(Jack) = 4/6 * 1/6 = 1/9
omeli [17]3 years ago
3 0
Total cards =6

Cards with king = 4

Cards with Jack = 1

P(king, then Jack) = (4/6)(1/6) = 1/9

Answer: 1/9
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2 doctors is what percent of<br> 25 doctors
ivanzaharov [21]
2/25 

To find percent divide 2 by 25 

2 ÷ 25 = 0.08 

Multiply 0.08 by 100 because percent is always out of 100

0.08 x 100 = 8 .

The answer is 8%
8 0
3 years ago
Read 2 more answers
A ride at a carnival has two types of cars for children to ride. One type has 2 seats and one has 4 seats. There are 25 cars, an
CaHeK987 [17]

Answer:

There are 10 and 4 seated cars

Step-by-step explanation:

I hope this helps you

5 0
3 years ago
the health inspector visits every 7 days and the fire inspector visits every 12 days what day will they both be there
Lesechka [4]
The 84th day since the greatest common multiple is 84.
5 0
3 years ago
Lyme disease is spread in the northeastern United States by infected ticks. The ticks are infected mainly by feeding on mice, so
Stels [109]

Answer: 90% confidence interval is; ( - 0.0516, 0.3752 )

 

Step-by-step explanation:

Given the data in the question;  

n1 = 72, n2 = 17

P1 = 54 / 72 = 0.75

P2 = 10 / 17 = 0.5882

so

P_good = 0.75

P_bad = 0.5882

standard ERRROR will be;

SE = √[(0.75×(1-0.75)/72) + (0.5882×(1-0.5882)/17)]

SE = √( 0.002604 + 0.01424)

SE = 0.12978

given confidence interval = 90%

significance level a = (1 - 90/100) = 0.1, |Z( 0.1/2=0.05)| = 1.645   { from standard normal table}

so

93% CI is;

(0.75 - 0.5882) - 1.645×0.12978 <P_good - P_bad<  (0.75 - 0.5882) + 1.645×0.12978

⇒0.1618 - 0.2134 <P_good - P_bad<  0.1618 + 0.2134

⇒ - 0.0516  <P_good - P_bad< 0.3752

Therefore 90% confidence interval is; ( - 0.0516, 0.3752 )

4 0
3 years ago
A clerical worker takes 3 times as long to finish a job as it does an executive secretary. Working​ together, it takes them 2 hr
vova2212 [387]

Answer:

8 hours

Step-by-step explanation:

In 2 hours, the clerical secretary can do 1/4 of the job. (The executive secretary does 3/4 of the job - or 3 times as much - in the same 2 hours.)

Since it takes the clerical secretary 2 hours to do 1/4 of the job, it will take them four times that to do it themselves. 2x4=8.

7 0
3 years ago
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