1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ludmilka [50]
3 years ago
8

The point (x,y) is rotated 180 degrees counterclockwise about the origin. Write a rule to determine the coordinate of the image

(x, y). Explain how you found the rule.
Mathematics
2 answers:
ikadub [295]3 years ago
5 0
If a point (x , y) is rotated 180 degrees counter clockwise around the origin, you take the opposites of that point so it now becomes (-x , -y). I hope that helps!!
bazaltina [42]3 years ago
3 0

Answer:

  (x, y) ⇒ (-x, -y)

Step-by-step explanation:

There are a couple of ways you can go at this.

1) Rotation by 180° in either direction is the same as reflection across the origin. That reflection is identical to reflection across both the x- and y-axes, in either order, so negates both coordinates. The transformation rule is ...

  (x, y) ⇒ (-x, -y)

__

2) The rule for a general rotation by angle α is ...

  (x, y) ⇒ (x·cos(α) -y·sin(α), x·sin(α) +y·cos(α))

For α = 180°, sin(α) = 0 and cos(α) = -1. This makes the rule for rotation by 180° be ...

  (x, y) ⇒ (-x, -y)

You might be interested in
What is the area of a sector with a central angle of 4π3 radians and a diameter of 7.3
julsineya [31]
The answer in terms of pi would be 13.3225pi. And the full answer would be 41.83265.
5 0
3 years ago
Please help it’s easy I think
Nikitich [7]

The frequency of revision times is given by the product of the frequency

density value and the class width.

Correct response:

  • The number of students are <u>72 students</u>

<h3>Methods of calculation using a histogram</h3>

The estimate of the number of students who revised for less than 45

minutes is given by the area, <em>A,</em> under the histogram to the left of the 45

minute mark as follows;

Frequency, f = Frequency density × Class width

Number of students = ∑f

Therefore;

A = 5 × 2 + 10 × 2.2 + 20 × 1.6 + 10 × 0.8 = 72

  • The number of students that revised for less than 45 minutes = <u>72 </u>students

Learn more about histograms here:

brainly.com/question/17139138

4 0
2 years ago
What is 10x99<br> who is a gir
irga5000 [103]

Answer:

990

Step-by-step explanation:

 just  multiply by 10 x 99

6 0
2 years ago
WILL MARK BRAINLIEST
Ivanshal [37]

Answer:

27

Step-by-step explanation:

First you need to find x.

It is shown that DE=EF, so we can use this.

5x-3=3x+7

5x=3x+10

2x=10

x=5

Then, you plug in the value of the variable and solve.

6(5)-3

30-3

27 = DF

8 0
3 years ago
Read 2 more answers
7.98 is 1/10 of what number?
Lyrx [107]

Answer:

79.8

Step-by-step explanation:

7.98*10=

79.8

to check

(1/10)*79.8=

7.98

7 0
3 years ago
Other questions:
  • A light blinks 18 times in 4 minutes. At that rate how many times will it blink in 6 minutes
    9·2 answers
  • HELP ASAP! PLEASE!!!
    12·1 answer
  • Find the inverse of the function.<br><br> y=5x-10
    9·1 answer
  • Michelle drove a total of 57.8 kilometers on saturday. she drove 23.5 kilometers from her house to the park. her next stop was t
    7·1 answer
  • What is the slope of the line shown below?
    6·1 answer
  • What is the volume of this cylinder?<br> r=5 cm<br> 12cm
    10·2 answers
  • Jim works overtime to save $500 per month for a pickup truck. The savings account Jim uses earns him 5% interest, compounded mon
    7·2 answers
  • Line C passes through points (0, 2) and (8,8). What is the slope of a line parallel to line C?
    14·1 answer
  • How many people worked in service jobs<br> (:Hurry I need it :)
    15·1 answer
  • Calculate the mean for 31 29 33 37 43 38 33 40
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!