Answer:
<h2><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>14</u></em></h2>
Step-by-step explanation:
7x + 9 = 9x - 19. <em>[</em><em>Corresponding</em><em> </em><em>Angles</em><em>]</em>
=> 9x - 19 = 7x + 9
=> 9x - 7x = 19 + 9
=> 2x = 28

=> <em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>14</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>
She answered 70% questions correctly
Further explanation:
Percetages are used to calculae the success or failure in tests or exams usually.
Given

The percentage will be calculated as follows:

She answered 70% questions correctly
Keywords: Percentage, Success rate
Learn more about percentage at:
#LearnwithBrainly
Answer: A
Step-by-step explanation:
Thank u
B because it has opposite slopes