Louis makes a model of a plane. The scale of the model is 1 : 160
The length of the real plane is 72 metres.
Work out the length of the model.
Give your answer in centimetres.

23

step-by-step explanation:

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

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the weight of the object inside the box!