Adrian and Alexa had been teaching for a total of 36 years, Charles and Alexa had been teaching for a total of 22 years, and Charles and Adrian had been teaching for a total of 28 years.. How long had each been teaching?

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

y do u put "subscirbe to ence" on a app for ppl who need with their work?

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

the answer is  

a.

4,624π mm2

step-by-step explanation: