7. The temperature drops 6 degrees each hour for 5 hours overnight What is the total temperature drop? If the number is positive use a + sign if it is negative use a-sign
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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.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?