Explain why acf is a 30-60-90 triangle

What is the absolute value of the complex number -4-sqrt2i

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.