Answer:
4 hours and 30 minutes.
Step-by-step explanation:
270÷60=4.5
Answer:
5,550 dollars
Step-by-step explanation:
6,12,18,24,30,36,42,48,54
Answer:
194.
Step-by-step explanation:
x = (7+4√3)
x^2 = x = (7+4√3)^2
= 49 + 48 + 56√3
= 97 + 56√3
x^2 + 1/x^2 = 97 + 56√3 + 1/(97 + 56√3)
= 194.