Refer to the following breakdown of responses to a survey of "Are you concerned about being tracked while connected to the Internet?" Very concerned
Somewhat concerned
No concern
Frequency
140
40
20
What is the class interval for the preceding frequency table?
Multiple Choice
10
20
40
O
None opply

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180