The speeds of vehicles passing a checkpoint were

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

What is the value of the product (3-2i)(3+2i)?