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2alshawe201
02.11.2019 •
Mathematics
Given: 7x/2 < 5. choose the solution set.
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Ответ:
{x | x < 10/7} I think sorry if I'm wrong.
Ответ:
A
Step-by-step explanation:
Using the Sine rule in Δ ABC
∠ B = 180° - (30 + 50)° = 180° - 80° = 100° ( sum of angles in triangle ) , then
BC × sin100° = 13 × sin30° ( divide both sides by sin100° )
BC =
≈ 6.6 ( to the nearest tenth )