8.4 is your answer to this question
Step-by-step explanation:
To solve this, you either need x or y. So x or y can be the missing values. The most you can do is simply move one of the terms to the other side.
Sum of complementary angles = 90
so
5x + 35 = 90
5x = 90 -35
5x = 55
x = 11
answer is A.
x = 11
For number 2 it's would be 12.8
Sorry I don't have time for number 3
Answer:
48.8%
Step-by-step explanation:
Just multiply this 0.488 by 100%, obtaining 48.8%.