arc length (s) = radius (r) · angle (θ) (the angle must be in radians!)
45° =
s = 8 ·
=
= 2π
Answer: 2π
Roger’s brother gave Roger his collection of coins when he left for college. At that time, the value of the collection was $720.
1 answer:
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Answer:
{ -
,
+
}
Step-by-step explanation:
ax² + bx + c = 0
= ( - b ±
) ÷ 2a
~~~~~~~~~~~
g(x) = 3x - 7
g²(x) = (3x - 7)²
g²(x) = 9x² - 42x + 49
g²( ) = 9(
)² - 42(
) + 49
9( )² - 42(
) + 49 = 8
16k² - 56k + 41 = 0
a = 16 , b = - 56 , c = 41
D = b² - 4ac = ( - 56)² - 4(16)(41) = 512 =
= ( 56 + √
) ÷ 32 =
+
=
-