The road from P to Q makes a detour round a mountain. It first goes 6km from P on a bearing of 080◦ , then 7km on a bearing of 020◦ and finally 5km on a bearing of 295◦ to reach Q. There is a plan to bore a tunnel through the mountain from P to Q. It will be considered cost effective if it reduces the journey by more than 10km. Determine whether the tunnel should be built based on this information

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step-by-step explanation:

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step-by-step explanation:

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)