Answer:
d.
Please give me brainliest, if you need an explanation I'll give
Step-by-step explanation:
Answer:
7 feet is the length of the blade of the windmill.
Step-by-step explanation:
We have the equation
h = 7 sin(pi/21t) + 28 ------ eq1
At time 't' = 0, the end of the blade is pointing to the right parallel to the ground meaning it is at the same height as the other end. (Ф = 0°)
So, by calculating the maximum height of this end at Ф = 90°. we can calculate the length of the blade.
Now, we know that a general model equation of a circular simple harmonic motion is represented as : y = A sinωt + k ----- eq2
Where A is the amplitude that is, maximum displacement from mean to maximum position.
ω is the angular frequency.
Comparing eq1 and eq2:
A = 7
so the difference in blades end height at Ф = 0° and Ф = 90° is 7 feet.
Hence, the length of the blade is 7 feet.
Answer:
She is 11.25 years old.
Step-by-step explanation:
I just did 45 divided by 4.
Total number of voters=4400+17600=22000
Percentage of voters in favour of the shopping center: 4400/22000=1/5=20/100=20%
Therefore, 20% of the voters are in favour of the shopping center
Answer:
The answer is on point (3,1)
