The point A and B lie on the circumference of a circle with centre O. the area of the circle is 81πcm². The length of the major arc is 15πcm. Calculate:

a) The radius of the circle
b) The length of the minor arc, giving your answer in the form lπcm².
c) The acute angle​

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

Determine which postulate or theorem can be used to prove that lmn =nmo

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m