Lets say the angle is a and its supplementary is b:
since a+b=180 and a=19*b,
<span>a+19a=180
20a=180
a=180/20
a=9
19a=171</span>
Answer:
-
Step-by-step explanation:
The method that is not correct is brandon's method.
Answer:
30%
i guess
Step-by-step explanation:
Given:
must correctly answer 80% of the questions
correctly answered questions = 26
incorrectly answered questions = 4
unanswered questions = 15
Total questions = 26 + 4 + 15 = 45
45 * 80% = 36 required correctly answered questions.
36 - 26 = 10
Out of 15 remaining questions, 10 questions must be correctly answered for Heidi to advance to the next level.