There is 180 degrees in a triangle. We know two of the angles are 50 degrees. 180-50= 130 which is X.
Answer:T=1.54yr
Step-by-step explanation:
Formulate for simple interest
I=prt/100
T=100I/pr
T=100×400×12/30100×10
T=1.54yr
Substitute , so that . Then the ODE is equivalent to
which is separable as
Split the left side into partial fractions,
so that integrating both sides is trivial and we get
Given the initial condition , we find
so that the ODE has the particular solution,
The answer is (x,y) —> (y,-x)