The coordinates of a rectangle are (3,0), (3, -5), (-4,0) and (-4,-5).
1. What is the length and width of this rectangle?
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2. What is the perimeter of the rectangle?
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3. What is the area of the rectangle?
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Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

In a class of 77, there are 44 students who play soccer. if the teacher chooses 33 students, what is the probability that none of the three of them play soccer?