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malfutka [58]
3 years ago
9

Q is the midpoint of PR. PQ equals 6X -7 and QR equals 5X plus one. Final length of PR.

Mathematics
1 answer:
Elina [12.6K]3 years ago
7 0

Answer:

PR = 82

Step-by-step explanation:

Since Q is the midpoint of PR, then

PQ = QR, that is

6x - 7 = 5x + 1 ( subtract 5x from both sides )

x - 7 = 1 ( add 7 to both sides )

x = 8

Thus

PR = PQ + QR = 6x - 7 + 5x + 1 = 11x - 6

Hence

PR = 11(8) - 6 = 88 - 6 = 82

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The answer is D. 2

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The only answer that gives this is D:
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Step-by-step explanation:

7 0
3 years ago
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{1, 4, 9, 4, 10, 8, 42} What is the best measure of center for this data set?
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1, 4, 9, 4, 10, 8, 42

Put this into order.

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So, that leaves you with the mean.

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7 0
4 years ago
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Which one of the following is not equal to 100 meters? 0.100 kilometers 10 hectometers 10,000 centimeters 100,000 millimeters
lara31 [8.8K]
Situation: Which one of the following is not equal to 100 meters?
We were given 4 different choices with corresponding values, not let's start finding the correct answer.
=> 0.100 kilometers
1 meter = 0.001 km 
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=> 10 hectometers
1 meter = 0.01 hm
100 meters = 1 hm
=> 10,000 centimeters
1 meter = 100 centimeters
100 meters = 10 000 cm
=> 100,000 millimeters
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3 0
3 years ago
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gregori [183]
<span>3x^2 + 4x + 8 + 2x^2 - 6x + 3 to give result as 9x^2 -2x - 5


</span>3x^2 + 4x + 8 + 2x^2 - 6x + 3 
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so

9x^2 -2x - 5 - (5x^2 - 2x + 11)
= 9x^2 -2x - 5 -  5x^2 +  2x - 11
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answer

expression (4x^2 -16) must be added to the sum of (3x^2 + 4x + 8) and (2x^2 - 6x + 3) to give the result as (9x^2 - 2x - 5)
3 0
3 years ago
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