Tossing 2 fair coins and both landing heads up what would be the fraction for that

Which of these angles are complementary? a. 45o and 45o b. 63o and 117o c. 45o and 135o d. 90o and 45o

From a party ,lori made a fruit punch from 1 gallon of orange juice ,2 quarts of grape juice,5 pints of pineapple juice,and 12 cups of cranbarry juice order the juice from least to greatest amount used in the fruit punch

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?