Wenn man den Radius eines Kreises um 2 cm verlängert, nimmt der Flächeninhalt um 40TT cm² zu. Wie lang war der Radius des ursprünglichen Kreises?

On a architect's drawing of a house, 1 inche representa 1.5

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?