Apair of diamond earrings have been marked up 50% and is now selling for $198. how much were the earrings before the mark up?

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Ofin . (2,4) (2,1) a. y= 2 b. x= 2 c. x= -2 d. y= 2x