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Lyrx [107]
3 years ago
15

What percentage of people has an IQ score between 60 and 140​?

Mathematics
1 answer:
ddd [48]3 years ago
8 0
The percetage will be 68%

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Number 15 plsss help me
ioda

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Step-by-step explanation:

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Factor 24k + 369 – 12 to identify the
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two coplanar lines that are perpendicular to the same line are parallel. a) always b) sometimes c) never
sergeinik [125]

<u>Answer:</u>

Two co planar lines that are perpendicular to the same line are always PARALLEL. So option A is correct.

<u>Explanation:</u>

Given:

  • Two lines are coplanar.
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To find:

whether they are parallel or not and choose the correct option from the given options.

Solution:

Now, we know that, slopes of perpendicular lines is -1

Then, \text{{slope of 1st line}}\times \text{{slope of perpendicular line}} = -1

\text{{slope of perpendicular line}} =\frac{- 1}{\text{{1st line slope}}}

similarly

\text{{slope of 2st line}}\times \text{{slope of perpendicular line}} = -1

\text{{slope of perpendicular line}} =\frac{- 1}{\text{{2st line slope}}}

Now, as both lines are perpendicular to same line, then, we have to equate above both of them.

Then, \frac{- 1}{\text{{1st line slope}}}= \frac{-1 }{\text{{2nd line slope}}}

1st line slope = 2nd line slope

Here, slopes of two lines are equal.

Hence, Two coplanar lines that are perpendicular to the same line are always parallel. So option A is correct.

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3 years ago
If 8 x/2 = 2 3/8 x 4 ¾ find x
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Answer:

x = 361/32

Step-by-step explanation:

I'm assuming that "8 x/2" is a mixed number.

8 0
3 years ago
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