Answer:
Step-by-step explanation: 100 divided by 20 is 5 therefore, each question is worth 5%. take how many questions she got right and multiply by 5. then determine if her score is less than or greater then 90%.
Answer:
Step-by-step explanation:
63 divided by 9 times 10 minus 2
First introduce the following notations:
Answer:
A) 45=x
B) Yes, since both A and B are 90°