The answer is 75
First you subtract 180 and 165 to find that smallest angle inside the triangle(15). Then you add 15 and 90,the two angles you know, and do 180 - 105= 75.
The trick is that all angles inside a triangle equal 180 degrees. Hope this helps!
Any texas instruments calculator would do the job
as long as its a scientific calculator
A is coefficient of x square
b is coefficient of x
and c is constant term in the polynomial
Distribute 5 to 2x-3
10x-15
Hope this helps
If there are 67 pictures and 2 fits on each page , you'll need 34 pages . the 34th page will only have one picture though... the answer is 34