1.

is true for any two real numbers such that
, all the more for positive ones.
2.

Answer:
C
Step-by-step explanation:
- 6(2x + 3) - 4(5x + 2)
- 12x + 18 - 20x -8
- -8x +10
If the radius is 20cm, the circumference is
centimeters.
Now, 45° is one eighth of a whole turn, so the arc intercepted by a 45° angle is one eighth of the whole circumference, so the answer is

Hello!
Brice is standing further away from the door, because 20 metres are greater than 20 centimetres.
A lot greater, actually, because 20 metres = 2,000 centimetres.
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