Answer:

Step-by-step explanation:
Pay attention to the two tick marks. This indicates that those sides are congruent to each other and so will the angles on the bottom and top. Therefore, we can set up the equation
and solve for x:






Answer:
B. 3 to 2
Step-by-step explanation:
I calculated it logically
Probability of lock code with all even digits = (4/9) ^ 4 = 256/6561 = 0.039
So probabiilty of lock without all even digits = 1 - 0.039 = 0..961.