Forty-five of the 80 students in the club were girls what was the ratio of boys to girls in the club

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  7 : 9

Step-by-step explanation:

If 45 of the 80 students were girls, then the remaining 35 will be assumed to be boys*. The ratio of boys to girls is ...

  35 : 45 = 7 : 9

* So far, math problems have only recognized gender identification as "boys" and "girls". This is not intended to insult anyone who has a different gender identification. Someday, issues of gender identification may be resolved in a different fashion. For now, we assume any student that is not a girl will be a boy.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

or