Elisa wants to make 14.7 gal. of a 20% alcohol solution by mixing together a 60%
alcohol solution and pure water. How
much of each solution must she use?
A) 8.8 gal. of 60% solution, 5.9 gal. of pure water
B) 8.7 gal. of 60% solution, 6 gal. of pure water
C) 4.9 gal. of 60% solution, 9.8 gal. of pure water
D) 2.8 gal. of 60% solution, 11.9 gal. of pure water

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

5.762159

step-by-step explanation:

it would be 9 because when it is the nine is over five so that would mean it rounds up to 90 or 9

true

step-by-step explanation:

intersecting chords are just lines that intersect. so a line is equal to 180 degrees, so when it is intersected by another chord, then it create supplementary angles, and because the lines cross, vertical angels are also formed.

point m is on plane r