Answer:
2π/7
Step-by-step explanation:
A cosine wave is:
y = A cos(2π/T x + B) + C
where A is the amplitude,
T is the period,
B is the horizontal shift,
and C is the vertical shift.
In this case:
7 = 2π/T
T = 2π/7
Answer:
D
Step-by-step explanation:
Answer:
x = -21/5 = -4.200
Step-by-step explanation:
Answer:
Step-by-step explanation:
i d k
Answer:
John = 9
Kim = 6
Vanessa = 3
Step-by-step explanation:
John = n
Kim = n - 3
Vanessa = 0.5n - 1.5
Add them:
2.5n - 4.5 = 18
2.5n = 22.5
n = 9
