Which of the following is an example of a complex number that is not in the set of real numbers? -7
2 + StartRoot 3 EndRoot
4 + 9i

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Which is f(5) for the function –2x2 + 2x - 3?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point