Ages | Number of students 15-18 | 2
19-22 | 4
23-26 | 8
27-30 | 9
31-34 | 6
35-38 | 3
Based on the frequency distribution above, is 19 a:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

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°

idk

step-by-step explanation:

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