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allochka39001 [22]
2 years ago
9

10 POINTS !!!! solve using elimination -2x - y = 5 3x -y = -20 ( , )

Mathematics
1 answer:
svp [43]2 years ago
3 0

Answer:

(-5,5)

Step-by-step explanation:  add the equations in order to solve first variable. put the value in the other equations to solve the remaining variables- math  way

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A sequence of two transformations that can be used to show that polygon ABCDE is congruent to polygon GFJIH
Burka [1]

Two transformations that can be used to show that polygon ABCDE is congruent to polygon GFJIH : <u>rotation -90° and translation (0,2)</u>

<h3>Further explanation</h3>

There are several forms of transformation, including translation, dilation, rotation or reflection

There are 2 shapes of geometry:

Similar figures:

the same shape but different in size,

Congruent figures:

the same size and the same shape

Both polygons will appear congruent if, after being transformed, the two polygons will map exactly to each other

A sequence of two transformations e can do is :

1. rotation -90°

Let point H(4,1) from polygon GFJIH , we rotate -90°

\left[\begin{array}{ccc}x'\\y'\end{array}\right]=\left[\begin{array}{ccc}0&1\\-1&0\end{array}\right]\left[\begin{array}{ccc}4-6\\1+1\end{array}\right]+\left[\begin{array}{ccc}6\\-1\end{array}\right]\\\\=\left[\begin{array}{ccc}0&1\\-1&0\end{array}\right]\left[\begin{array}{ccc}-2\\2\end{array}\right]+\left[\begin{array}{ccc}6\\-1\end{array}\right]\\\\=\left[\begin{array}{ccc}8\\1\end{array}\right]

2. translation (0,2)

\left[\begin{array}{ccc}8\\1\end{array}\right]+\left[\begin{array}{ccc}0\\2\end{array}\right]=\left[\begin{array}{ccc}8\\3\end{array}\right]

<h3 /><h3>Learn more</h3>

brainly.com/question/13715226

Keywords: transformation, translation, rotation

#LearnWithBrainly

7 0
3 years ago
Read 2 more answers
-15<br> π<br> + 12<br> π<br> - 5<br> π<br> =
Ksju [112]

Answer:

-8π or -25.13

Step-by-step explanation:

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3 years ago
Of Semester Exam Review
ch4aika [34]

Answer:

A ) Near equator

B ) Near the poles

C ) Areas where solar radiations is most direct

D ) Only in the no

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3 years ago
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Sliva [168]
I believe the answer is C
4 0
2 years ago
Read 2 more answers
I need x and GH there is two answer to this!! Please help
g100num [7]

Answer:

<em>15</em>

Step-by-step explanation:

9x - 3 = \frac{(5x + 1) +19}{2}

2(9x - 3) = 5x + 1 + 19

18x - 6 = 5x + 20

13x = 26

x = 2

<em>GH</em> = 9(2) - 3 <em>= 15</em>

8 0
2 years ago
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