Answer:
the answer is 50 dollars
Step-by-step explanation:
because your interest is only 50% so whats 100 divided into 2 its 50

It is true only whenever x tends to 0(zero)
it is not importent that x be in radian or in degree.
Answer:
and 
Step-by-step explanation:
If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.
For the given equations:
Equation:1
Equation:2
Solving equation multiply equation 2 with 4 on both the sides
Equation 3
Subtracting Equation:3 from Equation:1

Putting value of 'y' in Equation:2 which will give the value of x

but where is ur question ??????