Grace hopper in our very first module, we looked at numeration systems and the different bases that various cultures used. the babylonian system was base 60; the mayan system was base 20 (almost); and our hindu-arabic system is base 10. you read in the grace hopper biography that computers use a base 2 system. in base 2, only two symbols are used, so all numbers are represented with 0s and 1s.

a) change the number 100 (base ten) to a numeral in base two.
b) change the number 1010101 (base two) to a numeral in base ten.

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.