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

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top