A minor arc, . in circle O with radius r

(a) is shorter than a semicircle in circle O.
(b) has measure less than 180.
(c) has measure ?r.
(d) Both (a) and (b) are true.
(e) None of these is correct.


(d) Both (a) and (b) are true.

Mathematics

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Solve the problem. Round your answer to 2 decimal places when necessary.In a given year, the population of a certain country is about 185 million. The overall birth rate is 17.6 births per 1000. The overall death rate is 10.4 deaths per 1000. Based on births and deaths alone (not counting immigration), about how much does the population of the country increase during this year?

A. 1.33 million people B. 0.13 million people C. 3.26 million people D. 13.32 million people

Mathematics

Complete the blank with either ? or ? to make the statement true.7    {2, 3, 4, ..., 7}

A. ? B. ?

Mathematics

A partial payment is made on the date(s) indicated. Use the United States Rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. 

A. $834.07 B. $839.90 C. $830.16 D. $835.90

Mathematics

Find the expected value of the random variable.The random variable X is the number that shows up when a loaded die is rolled. Its probability distribution is given in the table.

A. 4.15 B. 3.50 C. 0.17 D. 4.02

Mathematics