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ozzi
3 years ago
15

AB is parallel to CD.

Mathematics
1 answer:
kogti [31]3 years ago
6 0

Answer:

Step-by-step explanation:

∠ABC = ∠BCD    { AB // CD; BC TRAVERSAL, alternate angles are equal}

∠ABC = 20

∠BCA = ∠BAC     {angles opposite to equal sides are equal}

∠BCA = ∠BAC = x

x + x + 20 = 180

2x = 180 - 20

2x = 160

x = 160/2

x = 80

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What is the measure of abc
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Answer:

The size of an angle is measured in degrees (see Angle Measures). When we say 'the angle ABC' we mean the actual angle object. If we want to talk about the size, or measure, of the angle in degrees, we should say 'the measure of the angle ABC' - often written m∠ABC.

Step-by-step explanation:

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3 0
4 years ago
a rectangular plot of land has the length of 4/7 mile and a width of 3/8 mile. what is the area of this plot? ​
Tomtit [17]

Answer:

3/14 of a mile

Step-by-step explanation:

It is asking for area.  The area of a rectangle is base times height

A = bh

the length can be either the base or the height.  It won't matter for this question.  Same goes for the width.  Lets use 4/7 as the base, and 3/8 as the height.  

So

A = (4/7)(3/8)

*When multiplying fractions, multiply the numerators together, and multiply the denominators together, then simplify the resulting fraction.

A = (4/7)(3/8)     becomes  

A = 12/56           which reduces to

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3 years ago
What is the radius of a base?<br> 3 units<br> 6 units<br> 10 units<br> | 12 units
horsena [70]

Answer:

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Step-by-step explanation:

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3 years ago
Write the equation of the parabola in vertex form that has the following properties: passes through the point (2, 12) and has a
tatuchka [14]

Answer:

<h3>              f(x) = 4(x - 4)² - 4  </h3>

Step-by-step explanation:

f(x) = a(x - h)² + k           - vertex form of the equation of the parabola with vertex (h, k)

so the equation of parabola with the vertex (4, -4) is

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16 = 4a

a = 4

Therefore the equation (in vertex form) of parabla is:

                                 <u> f(x) = 4(x - 4)² - 4  </u>

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3 years ago
25+ (-17)<br> What is the sum or difference
IRINA_888 [86]

Answer:

<h2>sum = 8</h2><h2>difference = 42</h2>

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