Devin started the work shown to solve for the unknown angle measures.

8x – 1 + 9x – 6 = 180
17x – 7 = 180
17x = 187
What are the measures of angles Q and R?

m∠Q =
°

m∠R =
°

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?