Search over 10,000 free study notes

4x + 10 = 18
4x= 18-10
4x= 8
x=8/4
x=2

3x+y=16 (equation 1)x+y=10 (equation 2)Solve by elimination, notice that we have two of the same y's so as they have the same sign we subtract to get 2x=6, we rearrange to get x= 3Sub this back int...

We start off by defining what an odd number is. We take a general letter, say the letter n, to represent any number. If we multiple it by 2 we are sure no matter what number we enter as n the answer will...

The equation of a circle comes in a standard format of (x-a)² + (y-b)² = r² where (a, b) are the coordinates of the centre of the circle and r is the radiusFrom the inform...

To solve this problem, we have to look at some trig. identities that will help us simplify the problem.The formula booklet is always a great place to start! You can find that sec^2(x) = 1 + tan^2(x). Subs...