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3 years ago

Help me on my math please

Mathematics

1 answer:

Gnesinka [82]3 years ago

6 0

Hi! I'm happy to help!

First you will need to split your line into the appropriate number of divisions. Because the fraction has a denominator (bottom) of 8, we split into 8 divisions. From there you count up from zero to 7, because it is 7/8.

0 is 0, the next dash is one, the next is two, and so on. The number one should be 8. Place the marker on the one that counts as 7.

I hope this was helpful, keep learning! :D

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According to chebyshev's theorem, the maximum proportion of data values from a data set that are more than 2 standard deviations

vodka [1.7K]

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3 years ago

The offices of president, vice president, secretary, and treasurer for an environmental club will be filled from a pool of 15c

Alexus [3.1K]

Answer:

a) 5.13% probability that all of the offices are filled by members of the debate team

b) 2.56% probability that none of the offices are filled by members of the debate team

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the people are chosen is important, since the first person is the president, the second is the vice president and so on... So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

(a) What is the probability that all of the offices are filled by members of the debate team?

Desired outcomes:

4(president, vice president, secretary, and treasurer) offices from a set of 8(candidates of the members debate team).

$D = P_{(8,4)} = \frac{8!}{(8-4)!} = 1680$

Total outcomes:

4 offices from a set of 15 candidates.

$T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760$

Probability:

$P = \frac{D}{T} = \frac{1680}{32760} = 0.0513$

5.13% probability that all of the offices are filled by members of the debate team

(b) What is the probability that none of the offices are filled by members of the debate team?

Desired outcomes:

4(president, vice president, secretary, and treasurer) offices from a set of 7(candidates who are not of the members debate team).

$D = P_{(7,4)} = \frac{7!}{(7-4)!} = 840$

Total outcomes:

4 offices from a set of 15 candidates.

$T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760$

Probability:

$P = \frac{D}{T} = \frac{840}{32760} = 0.0256$

2.56% probability that none of the offices are filled by members of the debate team

7 0

4 years ago

Plz help me I’m stuck on this question

Ksju [112]

The equation is N= 172-42÷2.

8 0

3 years ago

Read 2 more answers

There are (43)2⋅ 40 strawberries on a farm. What is the total number of strawberries on the farm?

Kazeer [188]

Answer:

3,440 strawberries

Step-by-step explanation:

Because of PEMDAS you want to start with the parentheses, and want to treat them like the distributive property.

So,

43 x 2 = 86

Then,

86 x 40 = 3440.

I hope that helps!!

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3 years ago

Which of the following is irrational?

Aliun [14]

Answer:

Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers. This is opposed to rational numbers, like 2, 7, one-fifth and -13/9, which can be, and are, expressed as the ratio of two whole numbers.

8 0

3 years ago