I think the first one is 1/200 and the second is 1/125
Complementary angles are those angles whose sum is 90 degree.
The measurement of two complementary angles are

There sum have to be 90 degree. That is

Combining like terms ,

Moving 20 to right side

Dividing both sides by 5

So the measurement of the angles are

Answer:
3/4
5/8
1/2
When you make a fraction like this in words, all you have to do is Take the number put it on top and the worded number on the bottom. Unless directed otherwise.
The percentage is 85 percent
First, simplify the (x+2)(x+2) with FOIL:
f(x)=(

)-3
Combine like terms
f(x)=

Then you have standard form.
Hope that helps.