Hi!
When following the order of operations, A. Parantheses (or brackets) come first. =)
19 - (1 - 4x) - 9x + 30 = -5x+48
(Don't forget the negativity symbol before the answer, if it isn't visible. It's not fully visible on my screen.)
Answer:
The statements are in regular print, the reasons are bolded
Step-by-step explanation:
1st:AB is the diameter of circle o. Both 1 and 2 are Given
2nd: AC and BD are tangents.
3rd:Ab is perpendicular to AC , AB is perpendicular to BD. Radius is perpendicular to tangent
4th: AC is parallel to BD Lines parallel to same line are congruent.