Solve the following word problems. (a) Mary wants to build a rectangular fenced area next to the interestion of two rivers so her little
lambs do not need her to bring water. The area she found looks like the below with dashed
lines representing the riversides.
If Mary has 1000 feet of fencing, what is the maximum area of the fenced area?
B) Mary realized the above area was a safety hazard for her lambs since they could fall in the river. Now she wants to construct a fenced rectangle of area 312500 square feet in the rainforest of Costa Rica where the air is so humid it can act as their water and away from any hazardous rivers. She does realize however that it will cost more for her to get fencing and is now concerned about this cost. For the first 3 sides it costs $8 per foot and there is a discount on the last side of $2 per foot. What is the minimum cost of the fencing?

At a lunchron, guests are offered a selection of five different grilled vegetables and four different meats. in how many waya could one choose three vegetables and two meats?

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion

In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000