Help please it is simple

00 points ! missy’s rotation maps point k(17, –12) to k’(12, 17). which describes the rotation? 270° counterclockwise rotation 90° counterclockwise rotation 90° clockwise rotation 180° rotation

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

The acceleration of an object due to gravity is 32 feet per second squared.what is acceleration due to gravity in inches per second squared?