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Ivenika [448]
3 years ago
15

What is the answer, I’m having a hard time understanding it.:(

Mathematics
1 answer:
svet-max [94.6K]3 years ago
5 0

A.1

B.15

I have already answered this on your previous question.

Hope this helps!


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Triangle RST has vertices R(2, 0), S(4, 0), and T(1, –3). The image of triangle RST after a rotation has vertices R'(0, –2), S'(
sleet_krkn [62]

Answer with explanation:

Pre -image= Vertices of Δ R ST=R(2, 0), S(4, 0), and T(1, –3)

Image of Δ R ST after rotation= R'(0, –2), S'(0, –4), and T'(–3, –1)

Pre-Image lies in Fourth Quadrant and Image lies in Third Quadrant.

If triangle is rotated by different angles in anticlockwise direction,then

   (a,b)_{90^{\circ}}=(-b, a)\\\\(a,b)_{180^{\circ}}=(-b, -a)\\\\(a,b)_{270^{\circ}}=(b, -a)

If triangle is rotated by different angles in Clockwise direction,then

     (a,b)_{90^{\circ}}=(b, -a)\\\\(a,b)_{180^{\circ}}=(-b, -a)\\\\(a,b)_{270^{\circ}}=(-b, a)

⇒→So, Pre image that is ,Δ R ST having vertices ,R(2, 0), S(4, 0), and T(1, –3) when rotated by either 90° in clockwise direction or by 270°, in anticlockwise Direction to get Image Δ R' S'T' having vertices R'(0, –2), S'(0, –4), and T'(–3, –1)  .

7 0
3 years ago
Why does most of eastern Russia have a low population density?
____ [38]

Answer:

The correct answer would be C. Most of the region is located within tundra and subarctic climate zones.

Hope that helped :)

4 0
3 years ago
Read 2 more answers
Somebody help me how do i get my grade up from a 25 in math by tom because grads go in.
34kurt

Answer:you have to ask your teacher for mad extra credit and maybe turn in late assignments and retake quizes

Step-by-step explanation:

7 0
3 years ago
Find the value of y.
Damm [24]

y=8

This is a 30-60-90 triangle which follows a specific rule.

Under this rule; the side containing the 60 and 90 angles is x, the side containing the 30 and 90 angles is x sqr root 3, and the side containing the 60 and 30 angles is 2x.

We are given the side that contains the 30 and 90 angles and therefore we know that is the same as x sqr root 3. Since it’s given as 4 sqr root 3 we can solve for x and get 4 for x.

We need to know the side that contains the 30 and 60 angles. Since this is 2x we can multiply what we got for x by 2. 2*4 is 8.

Therefore, y=8.

7 0
3 years ago
Glven the following diagram, IfmXCOF = 150°, then mZBOC =<br> ADIS<br> B<br> D
m_a_m_a [10]

Answer:

∠ BOC = 30°

Step-by-step explanation:

Given ∠ COF = 150°

∠ BOC + ∠ COF = 180° ( BF is a straight angle ) , that is

∠ BOC + 150° = 180° ( subtract 150° from both sides )

∠ BOC = 30°

3 0
3 years ago
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