Answer asap! important! must be correct! more points!
william said that when you multiply three positive and negative decimals, the answer changes depending on where you place the parentheses. use these numbers to answer the questions: –2.4, –0.63, 1.8, –3.42
is william’s statement always true, sometimes true, or always false? write two pairs of equations to support your answer.

This is about circle theorems. someone asap : (

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.