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4 years ago

34,515 is divisible by a. 3 b. 9 c. 5 Explain your reasoning for your choice(s).

Mathematics

1 answer:

Lemur [1.5K]4 years ago

5 0

Answer:

a b and c

Step-by-step explanation:

a) a number is divisible by 3 if the sum of its dígits is divisible by 3:

3+4+5+1+5=18

18 is divisible by 3 (6*3=18), then 34515 is divisible by 3 too.

b)a number is divisible by 9 if the sum of its dígits is divisible by 9:

3+4+5+1+5=18

18 is divisible by 9 (9*2=18), then 34515 is divisible by 9 too.

c) a number is divisible by 5 if its last digit is 5 or 0

then, 34515 is divisible by 5

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lakkis [162]

Answer:

3/2 or 1.5

Step-by-step explanation:

0.75 times 4 is 3

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Your answer is 3/2 or 1.5

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3 years ago

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jeyben [28]

Answer:

The sample size must be atleast 3600

Step-by-step explanation:

We are given the following in the question:

The scores of individual students on the American College Testing (ACT) Program is a bell shaped distribution that is a normal distribution.

Population standard deviation = 6.0

We want that the sample standard deviation should not be more than 0.1.

Thus, the standard error should not be more than 0.1.

Standard error =

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Putting values, we get,

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3 years ago

Mrs.Hense sells a roll of coastal bermuda horse hay for $58. She says she will make $174 if she sells 3 rolls

viktelen [127]

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3 years ago

Read 2 more answers

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sleet_krkn [62]

Answer:

b) ( N c ∩ D ) ∪ ( N ∩ D c )

Step-by-step explanation:

Let's see each option:

a) N ∪ D

This includes those who likes both, so this is not correc.t

b) ( N c ∩ D ) ∪ ( N ∩ D c )

Nc is the complement of N. That is those who do not subscribe to news magazine. Intensected with D, those are who do not subscribe to the news magazine but do to the daily informer. By the same logic, the second intersection are those who do subscribe to news magazine but not to the daily informer. This is the correct answer

c) N c ∩ D

This includes only those who subscribe to the daily informer but not to the news maganize. It also needs those who subscribe to the news magazine but not to the daily informer.

d) ( N ∩ D )c

This also involves those who do not subscribe to any of these news sources.

e) ( N c ∪ D ) ∩ ( N ∪ D c )

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