A town of 30,000 generates 1.5 kg/capita-day of MSW. MSW is collected weekly. The trucks each have a capacity of 5 metric tonnes and operate 5 days per week. Each truck can haul 3 loads per day at 80% capacity. How many trucks are needed?

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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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°

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step-by-step explanation:

2,160 π

step-by-step explanation: