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pashok25 [27]
3 years ago
8

the coordinates of the endpoints of ab and cd are a(x1, y1), b(x2, y2), c(x3, y3), and d(x4, y4). which condition proves that ab

||cd?
Mathematics
2 answers:
goldenfox [79]3 years ago
6 0
(Y4-Y3 / X4-X3) = (Y2-Y1 / X2-X1)
k0ka [10]3 years ago
3 0
Two lines are parallel if they have the same slope. Computing for the slope of line segment ab and line segment cd using m=(y2-y1)/x2-x1):
m of ab=(2-1)/(2-1)=1         m of cd=<span>(4-3)/(4-3)=1
Since line segment ab and line segment cd have the same slope which is 1, then they are said to be parallel. </span>
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Dmitriy789 [7]

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4 0
3 years ago
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Find the area of the triangle.<br> 3 cm<br> 11 cm<br> C с<br> 14.5 cm
boyakko [2]

Answer: The answer is 43.5 because when using the formula you get this result.

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6 0
3 years ago
Mr peterson will buy 80 feet of fencing. The pieces of fence come in whole numbers of feet. His enclosure will be a rectangle an
DIA [1.3K]
The perimeter is:
 P = 2x + 2y = 80
 The area is:
 A = x * y
 The area as a function of a variable is:
 A (x) = x * (40-x)
 Rewriting we have:
 A (x) = 40x-x ^ 2
 We derive the function:
 A '(x) = 40-2x
 We equal zero and clear x:
 40-2x = 0
 2x = 40
 x = 40/2
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 The other dimension is:
 y = 40 - x
 y = 40 - 20
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 The area will be:
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 A = 20 * 20
 A = 400 feet ^ 2
 Answer:
 
The dimensions are:
 
x = 20 feet
 
y = 20 feet
 
The area is:
 
A = 400 feet ^ 2
5 0
3 years ago
7.) x-3&gt;4 please help
givi [52]

Answer:

x>7

Step-by-step explanation:

x-3>4

Add 3 to both sides

x>7

Hope it helped!

6 0
3 years ago
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The segment drawn from a vertex in a triangle to the midpoint of the opposite side.
AVprozaik [17]

check the picture below.

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3 years ago
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