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k0ka [10]
3 years ago
5

Probabilities where the focus is on just one group of objects and a random sample is taken from that group alone are called​ wha

t?
Mathematics
1 answer:
JulsSmile [24]3 years ago
7 0
I think the answer would be conditional probability. It is a type of probability that the focus is on a certain group and taking a sample from it randomly. It is the probability of a certain event basing on the occurrence of an event that happens previously.<span />
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Given: <br> PQ<br> ⊥<br> QR<br> , PR=20,<br> SR=11, QS=5<br> Find: The value of PS.
dlinn [17]

Answer:

The value of the side PS is 26 approx.

Step-by-step explanation:

In this question we have two right triangles. Triangle PQR and Triangle PQS.

Where S is some point on the line segment QR.

Given:

PR = 20

SR = 11

QS = 5

We know that QR = QS + SR

QR = 11 + 5

QR = 16

Now triangle PQR has one unknown side PQ which in its base.

Finding PQ:

Using Pythagoras theorem for the right angled triangle PQR.

PR² = PQ² + QR²

PQ = √(PR² - QR²)

PQ = √(20²+16²)

PQ = √656

PQ = 4√41

Now for right angled triangle PQS, PS is unknown which is actually the hypotenuse of the right angled triangle.

Finding PS:

Using Pythagoras theorem, we have:

PS² = PQ² + QS²

PS² = 656 + 25

PS² = 681

PS = 26.09

PS = 26

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3 years ago
The two triangles are similar. What is the value of x? Enter your answer in the box.
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Just took the test and got the the correct answer *\(♡°▽°♡)/*

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3 years ago
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Answer:

I  believe its 33.60 because if you add up 33.+5% that would give you 33.6 so its 33.60

Step-by-step explanation:

Hope its right

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Which statement describes the relationship between x and y in these two equations?
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Answer:

The correct option is B.

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Which pair of angles are supplementary? ​
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Answer: H

Step-by-step explanation:

Supplementary angles just mean they add up to 180 degrees. 180 degrees means that when the two angles are put together one of each of their sides will form a straight line.

6 0
3 years ago
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