The following list contains some common polyatomic lons. Using the charge on these lons and the idea of valence, predict the formulas for the following:
nitrate
NO 3
phosphate
PO 3
sulfate
SO, 2
acetate
C₂H₂O21
ammonium
NH4
chromate
Cro-2
carbonate
CO, -2
dichromate Cr 20,-2
permanganate MnO4

the solution is 12x-6y

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

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step-by-step explanation:

answer: c. is your answer

step-by-step explanation: get me a black leather coat