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3 years ago

Which of the four triangles below are similar?

Mathematics

1 answer:

KiRa [710]3 years ago

7 0

The answer is B

Cause they all have the same angle points

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out of some students appeared in an examination 80% passed in mathematics 75% passed in english and 5% failed in both subjects i

Advocard [28]

Answer:

5000 students appeared in the examination.

Step-by-step explanation:

We solve this question using Venn probabilities.

I am going to say that:

Event A: Passed in Mathematics

Event B: Passed in English.

5% failed in both subjects

This means that 100 - 5 = 95% pass in at least one, which means that $P(A \cup B) = 0.95$

80% passed in mathematics 75% passed in english

This means that $P(A) = 0.8, P(B) = 0.75$

Proportion who passed in both:

$P(A \cap B) = P(A) + P(B) - P(A \cup B)$

Considering the values we have for this problem

$P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.8 + 0.75 - 0.95 = 0.6$

3000 of them were passed both subjects how many students appeared in the examination?

3000 is 60% of the total t. So

$0.6t = 3000$

$t = \frac{3000}{0.6}$

$t = 5000$

5000 students appeared in the examination.

4 0

2 years ago

you want to predict which movie will be the most popular among the students at your school next weekend. To do so, you ask a sam

Komok [63]

Because if you ask one student from each class you are getting a more accurate representation of the classes. If you were to ask one group you'd only get their opinion

6 0

3 years ago

What multiple of 8 gets an equal multiple of 9

musickatia [10]

Answer:

Explanation:

8*9=72

5 0

3 years ago

Who knows the answer??

Vanyuwa [196]

14: no she got 69% 38/55 = 69%

8 0

3 years ago

You rotate triangle ABC, with vertices A(-3, 1), B(-2, 2), and C(-3, 4), 90° counterclockwise about the origin to form triangle

katrin2010 [14]

The rule for going 90 degree counter clockwise is:
(x, y) becomes (y, -x)

Therefore, the new points are:

A(-3, 1) to (1, 3)
B(-2, 2) to (2, 2)
C(-3, 4) to (4, 3)

6 0

3 years ago

Read 2 more answers