Answer:
y = 9 cos [(⅕pi)x]
Step-by-step explanation:
Amplitude = 9
Period = 10
2pi/10 = pi/5
Answer: 0.04
That is four as a percent
Answer:
no solution because the square root of a negative number is not a real number d=-100
In fraction 1/2 in decimal 2.5
Answer:
$46185.04
Step-by-step explanation:
80000 = X(1 + 0.0275/12)^(20×12)
X = 46185.03749