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Viefleur [7K]
3 years ago
9

Number 12 please help please

Mathematics
1 answer:
miskamm [114]3 years ago
7 0
Line AC and Line AB are congruent.


Angle C and Angle B are congruent,

OR

Angle ACB and Angle ABC are congruent.
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Which system of equations has no solution?
allochka39001 [22]

Answer:

B.

{ \binom{7x - 2y = 9}{7x - 2y = 13} }

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Find the diameter of a circle with an
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Explain why P(A|D) and P(D|A) from the table below are not equal.
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Answer:


Step-by-step explanation:

Recall the definition for conditional probability.

We have P(A/D) = P(A and D)/P(D)

P(AD) = 2/17

P(A) = 8/17 and P(D) = 10/17

From the definition of conditional probability,

P(A/D) = P(AD)/P(D) = 2/17 divided by 10/17 = 1/5

But P(D/A) = P(AD)/P(A) = 2/17 divided by 8/17 = 1/4

Hence the two are not equal.

This is because there is a difference in the denominators

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3 years ago
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A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –1 standard devi
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There are 25 students in the class. Is it possible that 6 of them have 9 friends each, 8 of them have 8 friends each, and 11 of
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Answer:

It is not possible

Step-by-step explanation:

First 6 people have 9 friends and since 6 people can have totally the same friends which could all be each other, we would have 5 friends(from same 6 people) + 4 friends(not from the 6). Therefore we would have total 9 people/students

In second group of 8 people, their friends could entirely be the same be the same as the first group's friends or they could all be each other's friend hence just an additional 8 students to the population

In the third group of 11 people/students, same thing could apply as above but total number of students would always surpass 25 with the additional population. Example 9+8+11= 28

Therefore it is not possible that 25 students would each have those number of friends.

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3 years ago
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