Crazycookie1
Crazycookie1 Crazycookie1
  • 02-01-2020
  • Mathematics
contestada

Help, I know D2 is the dilation of 2? And I know the rotation is 90 degrees but I’m not to sure on how to find my answer? Help please

Help I know D2 is the dilation of 2 And I know the rotation is 90 degrees but Im not to sure on how to find my answer Help please class=

Respuesta :

MathPhys
MathPhys MathPhys
  • 02-01-2020

Answer:

(-18, 2)

Step-by-step explanation:

To rotate a point by 90°:

R₉₀ (x, y) = (-y, x)

R₉₀ (1, 9) = (-9, 1)

To dilate by 2:

D₂ (x, y) = (2x, 2y)

D₂ (-9, 1) = (-18, 2)

Answer Link

Otras preguntas

Draw and shade figures that represent 50%, 25%, and 150%. Label each figure and described it in words. How do I answer this question?
what is 100,000 less than five hundred sixty thousand , three hundred thirteen is
80 is 1/10 of what???do you know
what is 423,090,709,000 in word form?
write the following number in expanded and word form 5,325,603.712
write two decimals, one repeating and one terminating, with values between 0 and 1. then write an inequality that shows the relationship between your two decima
When describing scientific evidence, what is the meaning of the word “repeatable”?
Why might a scientist need to repeat an experiment
What is 21 over 40 in percent
In any good experiment, the scientist needs to (fill in the blank) the hypothesis.