Answer:
- high tide occurs at 12 noon and 12 midnight
- Low tide occurs at 6 a.m and 6 p.m
- maximum depth value = 20 ft
- Minimum depth value = 15 ft
Step-by-step explanation:
The depth is modelled as;
y = 20 + 5 cos (πt/6)
We are told that t = 0 represents 12:00 midnight.
This is high tide because at t = 0, the cos function will be at it's maximum value of 1 since cos 0 = 1.
Max depth value is;
y = 20 + 5(0)
y = 20 ft
Minimum depth value will be the low tide and it will be when the cos function is equal to -1.
Thus;
y = 20 + 5(-1)
y = 15 ft
Since t represents number of hours and since at 12 midnight, t = 0, thus; high tide will occur again at;
12 noon
Also, let's check for low tide.
Let's try t = 6 which means 6 a.m
Thus;
y = 20 + 5 cos (π(6)/6)
y = 20 + 5 cos π
Cos π has a value of -1
Thus;
y = 20 + 5(-1)
y = 20 - 5
y = 15 ft
Thus;
Low tide occurs at 6 a.m and 6 p.m
2×2=4
1×4=4
and I guess you can also flip 1×4 around and have 4×1 as your third one?
Answer:
0.3636363636
Step-by-step explanation:
Answer:
The indoor pool has a higher temperature and also has the greatest absolute value.
Step-by-step explanation:
The indoor pool has a higher temperature becasue 24 is greater than 23. It also has a bigger absolute value because the absolute value how much a number is from 0.
So the absolute value of 24 is 24.
The absolute value of 23 is 23.
24 is greater so the indoor pool also has a bigger absolute value.
