Answer: 31%
Step-by-step explanation:
% he paid for rent = amount paid for rent / amount earned x 100
That is
% paid for rent = 12,555/40,500 x 100
% paid for rent = 0.31 x 100
% paid for rent = 31
Answer:
In this case, you can use the concept of cosine to calculate y, and things are even easier when you have one of the special angles which is a 45° angle.
So we know that: cos45° = √2/2
This fact will always be true. In our case, we have:
cos45° = 7/y
Therefore, we have the equation:
7/y = √2/2
⇔ 14 = y√2
⇔ y = 14/√2
⇔ y = √196/√2 = √(196/2) = √98 = 7√2
So y is equal to 7√2
That answer was (B)................
