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Black_prince [1.1K]
3 years ago
9

Need math help please!!

Mathematics
1 answer:
Eva8 [605]3 years ago
8 0

Answer:

  8

Step-by-step explanation:

The fact that DE is perpendicular to AC means triangles AED and CED are congruent and side AD is equal in length to side CD.

  5x -20 = 2x +4

  3x = 24 . . . . . . . add 20-2x

  x = 8 . . . . . . . . . .divide by 3

The value of x is 8.

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Answer: 1.0754

Step-by-step explanation:

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Is my answer correct??
Maru [420]

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no

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Write the equation of a line that is parallel to {x=8}x=8x, equals, 8 and that passes through the point {(-3,-2)}(−3,−2)left par
Alexxandr [17]

Answer:

  x = -3

Step-by-step explanation:

The line parallel to x=8 is another vertical line:

  x = constant

To make it go through a point with an x-coordinate of -3, the constant must be -3.

Your line is ...

  x = -3

5 0
4 years ago
Which equation describes a line with a slope of -8 and includes the point (-4, 7)?
timurjin [86]
Such an equation would be y + 8x = - 25 (standard form) OR y = -8x - 25 (y-intercept form)
 
Deriving The Answer:

By using the point-slope form of the equation of a line, by knowing the gradient of that line and a point on that line, the equation of this line can be derived.

Now, the point-slope form exists as y - y₁ = m ( x - x₁)

since slope = -8 and the point on the line = (-4 , 7)

Then m = - 8
          x₁ = - 4
          y₁ =  7
                              ⇒  y - 7 = -8 ( x - (-4))

                              ⇒ y - 7 = -8x - 32

                              ⇒ y + 8x = - 25
                   


3 0
3 years ago
Solve for x in the diagram below.
gogolik [260]

Answer:

x = 9

Step-by-step explanation:

The parallel lines divide the sides of the triangle in proportion, that is

\frac{20-8}{x} = \frac{8}{6}

\frac{12}{x} = \frac{8}{6} ( cross- multiply )

8x = 72 ( divide both sides by 8 )

x = 9

3 0
3 years ago
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