KnowItAll

2HCl + Ca(OH)2 --> CaCl2+ 2H2O

k=9 when you solve for y for the second equation, you get: y=-3/2x-2 therefore, the slope has to be -3/2 to be parallel when you solve for y in the first equation, you get: y=-k/6x+5/6 so to have the same -1.5 slope, you need k to be 9

yes

gatorade - 3.27 body sweat - in between 4.5 and 7.0

correct because you used pythagorean theorem to get the last side - 13 and then you used sine law to get the other angle - 57.5 degrees and then did 180-57.5-90 to get 32.5