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
Kazeer [188]
3 years ago
14

The coordinates of a quadrilateral are (5, 8), (7, 10), (9, 12), and (11, 14). After a transformation, the sign of the x-coordin

ate and the sign of the y-coordinate for each ordered pair have changed. Which type of transformation occurred?
A) 180° rotation
B) (x,y)→(x + 2, y + 2)
C) reflection across the y-axis
D) reflection across the x-axis
Mathematics
1 answer:
bonufazy [111]3 years ago
6 0
Sign changing means that each value went from positive to negative. 

Assuming A is a 180 degree rotation around the origin, the answer would be A.

B doesn't change the sign for neither x nor y.
C changes the sign for y, but not x.
D changes the sign for x, but not y.
You might be interested in
A land developer is splitting up 1.19 hectares of land to form 9 identical properties. To the nearest tenth of a hectare, what s
OlgaM077 [116]

In this question , it is given that the land is 1.19 hectares. And the land developer splitting it into 9 identical properties . So to find the size of each property, we need to divide 1.19 by 9 and on doing that, we will get 0.13 hectares .

So the size of each property is 0.13 hectares .

4 0
3 years ago
Trigonometry Problem <br><br> Find the length of the missing side.
Alinara [238K]

Answer:

29.187

Step-by-step explanation:

Cos38°= base/hypotenuse

Cos38°= 23/w

w= 23/Cos38°

w= 23/0.788

w= 29.187

Hope it helps :-)

6 0
3 years ago
Evaluate: a-2b/c : if a = -8, b = 6.5, and c = -2.<br><br> -1.5<br><br> 10.5<br><br> -9
Mkey [24]
The answer to ur equation is  -1.5
3 0
3 years ago
Read 2 more answers
hi:) I’m not sure if this is correct. For the justifying part , must I still use the discriminant or can I just say that since t
labwork [276]

You did it right (almost, I got 21 instead of 19) but didn't finish.  You need to show your discriminant is never negative.

x² + (p+1)x = 5-2p

x² + (p+1)x +(2p-5) =0

Real roots mean a positive (or at least non-negative) discriminant:

D = b² - 4ac = (p+1)² - 4(1)(2p - 5) = p² + 2p + 1 - 8p + 20

D =  p² - 6p + 21

It's not totally obvious that D>0; we prove that by completing the square by noting

(p-3)² = p² - 6p + 9

so

p² - 6p = (p-3)² - 9.

D =  p² - 6p + 21

D =  (p-3)² - 9 + 21

D = (p-3)² + 12

Now we clearly see D>0 always because the squared term can't be negative, so D is always at least 12.   We always get two distinct real roots.

3 0
3 years ago
Identify the x- and y-intercepts of the graph
Tems11 [23]

Answer:

see explanation

Step-by-step explanation:

The x- intercept is where the graph crosses the x- axis, that is

( \frac{1}{3}, 0 )

The y- intercept is where the graph crosses the y- axis, that is

(0, 1 )

7 0
3 years ago
Other questions:
  • (X-3)(x+2) = 0 what is the answer to this ?
    5·1 answer
  • In an orchestra, there are 42 woodwind players to 56 brass is ratio of woodwinds to brass written as a fraction in simplest form
    6·1 answer
  • The circumference is 90 find the area
    12·1 answer
  • A construction company buys a bulldozer for $26,000. The company expects the useful life of the machine to be 12 years, at which
    7·1 answer
  • Please answer!!!! will make brainliest!!!
    6·1 answer
  • 5TH GRADE LEVEL QUESTION: LOOK AT PHTO AND ANSWER HANDING OUT BRAINLIEST.
    11·1 answer
  • Find the value of the cosine
    6·1 answer
  • Find the angle sum of polygon which had 9 sides​
    13·1 answer
  • In which container is the probability of randomly selecting a green ball on one draw 4/7?
    8·2 answers
  • 8 x 10*-3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!