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3 years ago

A line goes through points (1, 8) and (5, 6). What is the slope of the line?

Mathematics

2 answers:

kherson [118]3 years ago

7 0

-0.5

Step-by-step explanation:

$\frac{6 - 8}{5 - 1?} = - 0.5$

slope=

$\frac{y2 - y1}{x2 - x1}$

IrinaVladis [17]3 years ago

7 0

Answer:

-2/4

Explanation:

You label the first coordinate points as X(1) and Y(1) and the second coordinate points as X(2) and Y(2) and then apply the formula

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Sever21 [200]

Answer:

D. 85°

Step-by-step explanation:

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x = 125° - 40°
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Correct choice is D. 85

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2 years ago

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2 years ago

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Mashcka [7]

Answer:

$\cfrac{991\sqrt{2} }{80}$

Step-by-step explanation:

For a start simplify each of the roots:

$\sqrt{72} =\sqrt{36*2} =6\sqrt{2}$
$\sqrt{50} =\sqrt{25*2} =5\sqrt{2}$
$\sqrt{128} =\sqrt{64*2} =8\sqrt{2}$
$\sqrt{98} =\sqrt{49*2} =7\sqrt{2}$

Now simplify the expression in steps:

$\sqrt{72}-\cfrac{48}{\sqrt{50} } -\cfrac{45}{\sqrt{128} } +2\sqrt{98} =$

$6\sqrt{2}-\cfrac{48}{5\sqrt{2} } -\cfrac{45}{8\sqrt{2} } +2*7\sqrt{2} =$

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$20\sqrt{2}-\cfrac{609}{40\sqrt{2} } =$

$20\sqrt{2}-\cfrac{609*\sqrt{2} }{40\sqrt{2} *\sqrt{2} } =$

$20\sqrt{2}-\cfrac{609\sqrt{2} }{40*2 } =$

$20\sqrt{2}-\cfrac{609\sqrt{2} }{80 } =$

$\sqrt{2} (20-7\cfrac{49}{80} )=$

$\sqrt{2} *12\cfrac{31}{80} =$

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Answer:

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