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3 years ago

The Square Root of a whole number is Always, Sometimes or Never a rational

Mathematics

2 answers:

Igoryamba3 years ago

4 0

The square root of a whole number is rational Sometimes :)

blondinia [14]3 years ago

3 0

The answer is <u>Sometimes</u>

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1, In a class of 80 students in Debreberhan University, 45 are good in mathematics, 15 are good in both mathematics and in Engli

Aleks [24]

Treating the data as a Venn set, it is found that:

26 students are good in mathematics only.

28 students are not good in any of the three courses.

---------------------------------

I am going to say that:

A is the number of students good in Math.
B is the number of students good in English.
C is the number of students good in Psychology.

---------------------------------

9 are good in all of the three courses.

This means that: $A \cap B \cap C = 9$

---------------------------------

13 are good in both mathematics and psychology

This means that:

$(A \cap C) + (A \cap B \cap C) = 13$

$(A \cap C) + 9 = 13$

$(A \cap C) = 4$

---------------------------------

15 are good in both mathematics and in English

This means that:

$(A \cap B) + (A \cap B \cap C) = 15$

$(A \cap B) + 9 = 15$

$(A \cap B) = 6$

---------------------------------

16 are good in both English and psychology

This means that:

$(B \cap C) + (A \cap B \cap C) = 16$

$(B \cap C) + 9 = 16$

$(B \cap C) = 7$

---------------------------------

20 are good in psychology

This means that:

$c + (A \cap C) + (B \cap C) + (A \cap B \cap C) = 20$

$c + 4 + 7 + 9 = 20$

$c = 0$

---------------------------------

45 are good in mathematics

This means that:

$a + (A \cap B) + (A \cap C) + (A \cap B \cap C) = 45$

$a + 6 + 4 + 9 = 45$

$a = 26$

---------------------------------

Question a:

$a = 26$ , which means that 26 students are good in mathematics only.

---------------------------------

Question b:

At least one is:

$a + (A \cap B) + (A \cap C) + (B \cap C) + (A \cap B \cap C) = 26 + 6 + 4 + 7 + 9 = 52$

Thus, 80 - 52 = 28

28 students are not good in any of the three courses.

A similar problem is given at: brainly.com/question/22003843

4 0

3 years ago

Y’all help please and thank you!

Rashid [163]

Answer:

B i think

i examined carefully and im %75 sure that is it B

Step-by-step explanation:

im so sorry if it's wrong

5 0

2 years ago

Read 2 more answers

Explain the steps you would take to complete this conversion problem.

gayaneshka [121]

Answer:

The answer is B

Step-by-step explanation:

What steps should be taken to complete the conversion?

Cancel the mile and kilometer units. Divide 8 by 1.61, then multiply by 1000.

Cancel the mile and kilometer units. Multiply 8 by 1.61, then multiply by 1000.

Cancel the mile and kilometer units. Multiply 8 by 1.61, then divide by 1000.

Cancel the mile and kilometer units. Multiply 8 by 1000, then divide by 1.61.

5 0

3 years ago

Read 2 more answers

If a six pack of soda cost 2.46 how much is one can

Dafna11 [192]

Answer:

one can would be about $0.41

Step-by-step explanation:

Take $2.46 and divide it by 6 because that is the number of cans in the pack, the answer is $0.41 per can.

7 0

2 years ago

Which represents a quadratic function?

MrMuchimi

THE ANSWER IS B, CAUSE THE HIGHEST EXPONENT FOR A QUADRATIC FUNCTION SHOULD BE 2, AND WHICH A,B AND C SHOULD NOT BE EQUAL TO ZERO. HOPE THIS HELPS!

8 0

3 years ago