Answer:
92.86%
Step-by-step explanation:
Total questions, T = 50.
Colin thought 8 questions were right.
Colin got 5 questions right that he thought he got wrong.
Total score, s = 45.
So, actual number of questions which are wrong are 5.
Score according to him = 50 - 8 = 42.
Now, we know percentage accuracy is given by :
Therefore, percentage accuracy he had with predicting his scores is 92.86%.
Take both sides as powers of 4:
Do it again:
Answer:1
Step-by-step explanation:it is right
-213
3|3-5|^2-(-15)^2
3(4)-225
=12-225= -213
9
