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xenn [34]
3 years ago
11

A bag contains 13 cards numbered 1 through 13 . A card is randomly chosen from the bag. What is the probability that the card ha

s a multiple of 3 on it? Write your answer as a fraction in simplest form.
Mathematics
2 answers:
Simora [160]3 years ago
7 0
3/13
put that In your calculator, but do 3 divided 13.
that should give you the fraction in simplest form.
grandymaker [24]3 years ago
7 0

Answer: 4/13

Step-by-step explanation:

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Steve is making breakfast. The recipes call for 7/8 cup of milk for grits and 3/4 cups .for biscuits he only has 2 cups of milk.
Zanzabum
Answer: He does have enough.
Explanation: Simplifying 7/8 cups to fourths you get 1 3/4 cups of milk. If he has 2 cups of milk he still would have 1/4 cup left over of milk.
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3 years ago
Jeremiah read 5/6 a book in 2/3 an hour. How much can he read in an hour?
kaheart [24]

Answer:he can read 1 and 3/12 or 15/12 books in an hour.

Step-by-step explanation:

5 0
2 years ago
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What Difference between hundreds and hundredths?
nordsb [41]

hundred means 100 or 200. Like I have 100 cats.

Hundredth means you have 1/100 of something. I have a peice of pie that is 1/100 of the pie. That means there are 100 pieces of the pie but I only have one out the hundred pieces.

hundred=100

hundredth = 1/100 = 0.01

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7 0
2 years ago
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A geologist examines 14 geological samples for iron concentration. The mean iron concentration for the sample data is 0.181 cc/c
kykrilka [37]

Answer:

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{0.0318}{\sqrt{14}} = 0.0140

The lower end of the interval is the sample mean subtracted by M. So it is 0.181 - 0.0140 = 0.167 cc/m³.

The upper end of the interval is the sample mean added to M. So it is 0.181 + 0.0140 = 0.195 cc/m³.

The 90% confidence interval for the population mean iron concentration is between 0.167 cc/m³ and 0.195 cc/m³.

3 0
3 years ago
Please help me with this it’s hard
alina1380 [7]
It is mostly likely D or B but I think it’s D
7 0
3 years ago
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