Using Cramer's rule what is the value of x in the solution to the system of linear equations below? 2/5x+1/4y=9/20
2/2x+5/12y=3/4

What is the range for 31,39,29,34,37,24,36,33,34,28

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.