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

The monthly incomes from a random sample of workers in a factory are given below in dollars. Assume the population has a normal distribution and has a standard

The electric field of a charge Q at a distance d away is measured as E What will the electric field measure at a distance 1/2 d away from the charge?

In DNA, what base pairs with cytosine? A. adenine B. cytosine C. guanine D. thymine

A sphere has a volume of 4500pi cubic feet what is the radius of the sphere

The perimeter of a rectangular garden is 166 feet.The length of the garden is 3 feet more than four times the width. Which system of equations will determine th

Bohemian Company has 500,000 shares of no par common stock with a stated value of $8 per share issued and outstanding as of January 1, originally issued for $14

how many papers are in the gcse business exam

Can someone please help me out

Distinguish between solitary, parallel, and cooperative play.

Help me please! I need help! Thank you!