What is the value of cos 0 in the diagram below?

What is the prime factorization of 195

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)