se realiza una encuesta sobre la preferencias de legumbres y los resultados son iguales Halla f2 + f4 - f3

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°

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.

y-y1=m(x-x1)

y-1=1(x-8)