Apple557
09.12.2019 •
Mathematics
Write y = 2x2 + 4 in function notation. a) x = 2x2 + 4 b) f(x) = 2x2 + 4 c) f(y) = 2x2 + 4 d) f(y) = 2y2 + 4
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Ответ:
C
Step-by-step explanation:
The arc length is calculated as
arc = circumference of circle × fraction of circle
= 2πr ×
= 2π × 18 ×
= 36π ×
( cancel 36 and 24 by 12 )
= 3π ×
=
→ C