At a concert, the number of security guards needed is based on the average density of people in an area of 25' x 25'called a block. the concert space measures 350' by 200'. the number of security guards is based on a number of blocks necessary and each security guard can only be responsible for one block. 12,000 people are expected to attend the concert. how many security guards will be needed? how many people, rounded to the nearest 10, will be in each block?

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?