Which triangles a similar to triangle A?
A. C
B. Both
C. B
D. None

The answer is triangle B

Step-by-step explanation:

If you add the angles of triangle A, you get 112 degrees. Since 180 degrees is the result of all the angles of the triangle, you subtract 112 from 180 to get 68 degrees. Now all you have to do is find a triangle that has 68 degrees and one of the angles mentioned in triangle A. The only one fitting this description is triangle B.

The answer is C. Each triangle is equal to 180 degrees. 54+58 is equal to 112 which leaves 68 left to make up for the absent amount. The numbers are the same for both A and B.

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: