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
777dan777 [17]
2 years ago
5

I need help with numbers 17 and 18.

Mathematics
1 answer:
eduard2 years ago
7 0

Answer:

  17.  D

  18.  C

Step-by-step explanation:

For both of these questions, you only need a general understanding of what rotation, translation, and dilation do. That is sufficient to let you choose the correct answer.

<h3>17.</h3>

The coordinates of Y are both negative, so it is a point in quadrant III on the graph. Rotating a point in quadrant III 270° clockwise will rotate it through quadrants II and I to quadrant IV, where it will be to the right and below the origin. Translation 9 units right and 5 units down will put it farther to the right and farther below the origin, still in quadrant IV.

As you know, translation right 9 units adds 9 to the x-coordinate. Translation down 5 units subtracts 5 from the y-coordinate. That means the coordinates of Y' must have x > 9 and y < -5. There is only one answer choice like that:

  D.  Y'(11, -8)

__

<h3>18.</h3>

Dilation about the origin multiplies each coordinate by the scale factor. It does not change the quadrant of a point on the graph. The original coordinates of R are (negative, positive), so it is in quadrant II. The dilated point will still be in quadrant II, but will be closer to the origin. Both coordinate values will change.

  R' = (1/3)R = (1/3)(-2, 3) = (-2/3, 3/3)

  R' = (-2/3, 1) . . . . . matches choice C

You might be interested in
What is the equation in slope-intercept form of the line that passes through the points (-4.2) and (12, 6)? (2 points)
sp2606 [1]

Answer: that's hard

Step-by-step explanation:that's hard

7 0
3 years ago
Which ordered pairs is a solution to -5x + 3y &gt; 12?
GaryK [48]

9514 1404 393

Answer:

  (-5, 5), (2, 8), (-6, 0)

Step-by-step explanation:

It is convenient to graph the solution, then plot the points to see which fall in the solution area.

The point (3, 9) falls on the boundary line, which is <em>not</em> part of the solution set.

The points that are solutions are ...

  B(-5, 5)

  E(2, 8)

  F(-6, 0)

5 0
3 years ago
Alessia uses her bank card to buy lunch 3 times. Each time she buys lunch, it costs $12.50. She then deposits $30 in her bank ac
igomit [66]

Answer: She has a $-7.50 balance

Step-by-step explanation: A = 3*12.5

                                             A= 37.5

                                             37.5-30= -7.5

6 0
3 years ago
Read 2 more answers
The diagram represents a triangle that is reduced by a scale factor of 0.4.
NARA [144]

Answer:the answer would be 8.

Step-by-step explanation:

If you look at the reduced triangle, the height is 2. Therefore you would have to multiply by 4 instead of 0.4 even if the scale factor is 0.4. The reason is, you are enlarging the triangle to find the bigger triangle. If you did 0.4 times 2 you would get 0.8. But that wouldn’t make any sense if you said that that was the height of the ENLARGED triangle.

5 0
3 years ago
Read 2 more answers
Which expression is equivalent to 1/2 (13f+5)?
jeka94
The answer is B. 6.5f+2.5 because 13/2 is 6.5 and 5/2 is 2.5
4 0
2 years ago
Other questions:
  • Morgan wants to purchase a Nintendo Switch. He has $94 in his savings.
    14·1 answer
  • The length of an insect’s wing, drawn at a scale of 50:1, is 15 cm. What is the actual length of the wing?
    5·2 answers
  • May someone pls help me
    11·1 answer
  • Find the range of f (x) = - 2x + 6 for the domain {–4, –3, –2, –1}.
    9·1 answer
  • PLZ HELP ITS TESTED lol
    8·2 answers
  • Find the volume of the cylinder. Use 3.14 for Pi, and round your answer to the nearest tenth.
    11·1 answer
  • A die was rolled eight times. The rolls were 2, 2, 3, 4, 4, 5, 6, and 6. What is the mean absolute deviation for this data? A) 1
    9·1 answer
  • What is the perimeter (in feet and inches) of a rectangle that has a length of 12'7" and a height of 11'3"?
    7·1 answer
  • A $\textit{palindrome}$ is a positive integer which reads the same forward and backward, like $12321$ or $4884$. How many $4$-di
    13·1 answer
  • The cost to produce x units of wire is C=30x +500, while the revenue is R = 40x. Find the interval where the product will at lea
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!