C yes because the ratios are equivalent between each pair of values
See Explanation
Step-by-step explanation:
1. By interior angle sum Postulate of a triangle.
From equations (1) & (2), we find:
Hence proved
2. In
is exterior angle.
Therefore, by remote interior angle theorem, we have:
From equations (1) & (2), we find:
is an isosceles triangle.
Thus proved.
It dropped by 4.5 means that we have to subtract 4.5 from 9.2
9.2 - 4.5 = 4.7 °C
So 4.7 °C is your answer :D