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Ket [755]
3 years ago
9

A (litres)

Mathematics
1 answer:
gladu [14]3 years ago
4 0

Answer:

Step-by-step explanation:

Graph attached represents the relation between amount of oil left in the leaky oil tanker and time.

a). Gradient of the line = \frac{\text{Rise}}{\text{Run}}

                                      = \frac{(160-120)}{(0-8)}

                                      = -5

    A-intercept = 160

b). Linear equation to represent the given relation in the graph will be,

  A = (-5)t + 160

c). At t = 15 minutes,

   A = (-5)(15) + 160

   A = -75 + 160

   A = 85 liters

d). This model is applicable till the container gets fully emptied.

   For A = 0,

   0 = -5t + 160

   t = \frac{160}{5}

   t = 32 minutes

   Therefore, this model is reasonable up to t = 32 minutes.

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