What is the square root of -16 complex numbers

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

The product of sin 30 degrees and sin 60 degrees is same as the product of

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b