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slega [8]
3 years ago
10

Okay so! This is really urgent and it’s due really soon and I really don’t understand this question, could someone please help?

Here’s the question:
Square root of 80 or 8.1
Is it less than, greater than or equal
Mathematics
2 answers:
Amanda [17]3 years ago
6 0

Answer:

8.9 (for 80) and 2.8 (for 8.1) ope this helps you out!

Step-by-step explanation:

grandymaker [24]3 years ago
5 0

Answer:

the square root of 80 is greater than the square root of 8.1

Step-by-step explanation:

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4. Which of the following lines is perpendicular to y = -2X + 8?
Alenkinab [10]

For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.

That is to say:

m_ {1} * m_ {2} = - 1

We have the following equation:

y = -2x + 8

So:

m_ {1} = - 2

Thus:

m_ {2} = \frac {-1} {m_ {1}}\\m_ {2} = \frac {-1} {- 2}\\m = \frac {1}{2}

Thus, a line perpendicular to the given line must have slope m = \frac {1} {2}.

Option A:

x + 2y = 8\\2y = -x + 8\\y = - \frac {1} {2} x + 4

It is not perpendicular!

Option B:

x-2y = 6\\2y = x-6\\y = \frac {1} {2} x-3

If it is perpendicular!

Option C:

2x + y = 4\\y = -2x + 4

It is not perpendicular!

Option D:

2x-y = 1\\y = 2x-1

It is not perpendicular!

The correct option is option B

ANswer:

Option B

5 0
3 years ago
I need help with this please help me
AveGali [126]
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Annette [7]
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