4. A system that exhibit harmonic motion oscillates between a height of 6 ft. and - 3 ft. At time = 0 the system is at its minimum height. At time = 2.5 seconds it's at the maximum height. Sketch a graph of the system and write a sinusoidal
equation that models this harmonic motion.
1. Amplitude (a)
ft. (Round to nearest tenth)
2. Vertical shift (d) =
ft. (Round to nearest tenth)
3. Period (P) =
sec.
4. Frequency (S) =___cycles/sec (Write as a fraction)
5. w =rads/sec (Write as a fraction. Use pi for 7)
6. h(t) =__cos(t) +
7. h(1.25) = __ ft. (Round to the nearest tenth)
8. h(3.75) =
ft. (Round to the nearest tenth)

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit