PLEASE HELP In right triangle LMN, L and M are complementary angles and sin(L) is 19/20. What is cos(M)?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

12 3 4 5 6 7 8 9 10time remaining01: 24: 54which graph represents this system? y=1/2x + 3 y= 3/2x -1

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?