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2 years ago

I have a question , My grandfather asked me a very old question . This question is of his time probably.

Mathematics

1 answer:

s2008m [1.1K]2 years ago

5 0

Found this, maybe it helps
कोड़ी
स्त्रीलिंग
बीस का समूह।
विशेषण
बीस।

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Two card decks are drawn from a standard 52-card deck, without replacement. Find the probability that they are both aces.

LenaWriter [7]

I'm sorry, when I answered this I'm pretty sure I wasn't in algebra two yet. The correct answer is 4/52 * 3/51 = 1/221

6 0

2 years ago

Read 2 more answers

Your town has seen a steady decrease of job opportunities by the amount of 10% every year. If the number of jobs available at th

anzhelika [568]

350,000*-10%=?
350,000*90%=?
?=315000

5 0

2 years ago

How do the gcf and the lcm help you when multiplying and adding or subracting fractions

kari74 [83]

<h3>Explanation:</h3>

GCF: the greatest common factor of numerator and denominator is a factor that can be removed to reduce the fraction.

<em>Example</em>

The numerator and denominator of 6/8 have GCF of 2:

6/8 = (2·3)/(2·4)

The fraction can be reduced by canceling those factors.

(2·3)/(2·4) = (2/2)·(3/4) = 1·(3/4) = 3/4

___

LCM: the least common multiple of the denominators is suitable as a common denominator. Addition and subtraction are easily performed on the numerators when the denominator is common.

<em>Example</em>

The fractions 2/3 and 1/5 can be added using a common denominator of LCM(3, 5) = 15.

2/3 + 1/5 = 10/15 + 3/15 = (10+3)/15 = 13/15

4 0

2 years ago

It takes Martin 1 hour to ride 65 miles, 2 hours to ride 130 miles and 3 hours to ride 195 miles. How far does he travel in 1 ho

iren [92.7K]

Answer:

65 miles

Step-by-step explanation:

5 0

2 years ago

The heights of adult males in the United States are approximately normally distributed. The mean height is 70 inches (5 feet 10

steposvetlana [31]

Using the normal distribution, it is found that the probability is 0.16.

<h3>Normal Probability Distribution</h3>

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem, the mean and the standard deviation are given by, respectively, $\mu = 70, \sigma = 3$ .

The proportion of students between 45 and 67 inches is the p-value of Z when <u>X = 67 subtracted by the p-value of Z when X = 45</u>, hence:

X = 67:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{67 - 70}{3}$

Z = -1

Z = -1 has a p-value of 0.16.

X = 45:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{45 - 70}{3}$

Z = -8.3

Z = -8.3 has a p-value of 0.

0.16 - 0 = 0.16

The probability is 0.16.

More can be learned about the normal distribution at brainly.com/question/24663213

3 0

1 year ago