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3 years ago

EXTRA POINTS

Mathematics

1 answer:

Ilya [14]3 years ago

4 0

Answer:

(-4,0)

Step-by-step explanation:

When it's a reflection, you basically make the number opposite.

Hope this helped!

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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

If $600 is put in the bank and each year the account earns 7% simple interest, then how much interest will be earned in two year

vampirchik [111]

Answer:

$8400

Step-by-step explanation:

7 0

4 years ago

Evaluate the formula for the perimeter of a parallelogram to solve the problem. Then check all that apply.

lorasvet [3.4K]

Answer:A-B-C-D

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

ankoles [38]

Answer:

A [and B]

Step-by-step explanation:

If x < 5.3 then anything higher than 5.3 makes the statement false.

16 is too high and therefore is the most obvious fallacy.

5.3 would actually make x=5.3 and therefore x wouldn't be less than 5.3 making it also false but this really depends on what your teacher is looking for.

0 is true.

-8.95 is true.

If there is any clarification in the problem you can provide I can give a more definite answer but now it is really a coinflip!

8 0

3 years ago

1/(x-1)(x-2) + 1/(x-2)(x-3) + 1/(x-3)(x-4) = 1/6

n200080 [17]

Answer:

see below

Step-by-step explanation:

See attached screenshot (too time consuming to type out using latex, so used MS word).

6 0

2 years ago

Read 2 more answers

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