The median of the data given below is-2. Find the
value of unknown frequency 'a':
Class-interval 0-20 20-40 40-60 | 60-80 | 80-100 100-120
Frequency 5 8 a 12 7 8

How do you find the circumfrance of a circle?

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

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle