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

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

what is the slope and y intercept of the function k(x)=7/9x-2

Lucas and his three brothers opened a bag with 48 cookies there are 16 cookies left if each boy ate the same number of cookies how many did each eat?

Who ever answers will get brainlest and revive 50 points ( and if u can put answers to whole assessment that will be fine to ;)

You own a portfolio that has a total value of $215,000 and it is invested in Stock D with a beta of .86 and Stock E with a beta of 1.39. The beta of your portfo

A and B, move toward one another. Object A has twice the mass and half the speed of object B. Which of the following describes the forces the objects exert on e

ANSWER FAST!! WILL GIVE CORRECT ANSWER BRAINLIEST! Which of the following could not be responsible for the acceleration of an object? wind friction gravity den

What types of things do you buy with a credit card

50 points! A polynomial has been factored below, but some constants are missing. 2x^3 - 8x^2 - 24x = ax (x+b)(x+c) What are the missing values of a, b, and c?

Please help!!!!!!!!!!

The magnitude of a component of a vector must be: a. equal to the magnitude of the vector. b. greater than or equal to the magnitude of the vector. c. less t