Determine the ordered pair that satisfies the equation, 4x + 8y = 0. A (4 , 8) B (-8 , -4) C (3 , -6) D (-5 ,5252) E I don't kno
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Answer:
5.5 minutes
Step-by-step explanation:
Fill in the given information and solve for t.
75 = -15cos(2πt/15) +65
-10/15 = cos(2πt/15)
t = 15/(2π)arccos(-2/3) ≈ 5.492
The volume reaches 75 dB about 5.5 minutes after the truck arrives.
