Abag contains 5 blue marbles, 6 red marbles, and 9 green marbles. two marbles are drawn at random. what is the probability of first drawing a blue marble and then, without replacing it, drawing a red marble?
a.9/20
b.3/38
c.1/19
d.11/20

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.