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2 years ago

Which is NOT a line of symmetry?

Mathematics

2 answers:

lesya692 [45]2 years ago

7 0

The line that is not a line of symmetry is: line b.

<h3>What is a Line of Symmetry?</h3>

A line of symmetry can be described as any imaginary line that divides a shape or figure into two equal halves.

Thus, the lines of symmetry in the image given below that divides the figure into two halves are line a, c, and d.

Therefore, the line that is not a line of symmetry is: line b.

Learn more about line of symmetry on:

brainly.com/question/4046938

azamat2 years ago

4 0

Answer:

line c

Step-by-step explanation:

symmetry is the quality of being made up of exactly similar parts facing each other or around an axis.

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Kitty [74]

Answer: (-2, 5) and (2, -3)

<u>Step-by-step explanation:</u>

Graph the line y = -2x + 1 (which is in y = mx + b format) by plotting the y-intercept (b = 1) on the y-axis and then using the slope (m = -2) to plot the second point by going down 2 and right 1 unit from the first point:

y - intercept = (0, 1) 2nd point = ( -1, 1).

Graph the parabola y = x² - 2x - 3 by first plotting the vertex and then plotting the y-intercept (or some other point):

$y = x^2-2x-3\quad \rightarrow \quad a=1,\ b=-2,\ c=-3\\\\\text{axis of symmetry:}\ x = \dfrac{-b}{2a}\ \longrightarrow \ x=\dfrac{-(-2)}{2(1)}=\dfrac{2}{2}=1\\\\\text{y-value of vertex:}\ f(1) = (1)^2-2(1)-3\quad \longrightarrow \quad y = 1 - 2 - 3=-4\\\\\text{y-intercept:}\ f(0)= (0)^2-2(0)-3\ \longrightarrow \ y=0 - 0 - 3 = -3 \\$

vertex = (1, -4) 2nd point (y-intercept) = (0, -3)

<em>see attached</em> - the graphs intersect at two points: (-2, 5) and (2, -3)

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3 years ago

The angles of a quadrilateral measure 80° 100° 100° and 80° In this order what kind of quadrilateral has this shape?

NemiM [27]

Answer:

The answer is a isosceles trapezoid.

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Prime:2,3,5,7
Composite:4,6,8,9

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3 years ago

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tatiyna

Answer:

30°,40°

Step-by-step explanation:

let the other angles be 3x and 4x

3x+4x+110=180

7x=180-110=70

x=70/7=10

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4x=4×10=40

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