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.
This is a ratio.
12 km : 3 h
simplify to-
4km : 1 h
which means the hiker traveled 4 km per 1 hour.
X - y = 5,
x = 5 + y
substitute (x = 5 + y) into the first equation,
5 + y + 2y = -1
3y = -6
y = -2,
substitute y = -2 into (x - y = 5),
x + 2 = 5
x = 3
Hence, x = 3, y = -2
Answer:
The farmer jones keep the chickens away frome the other animals because the chickens are using "fowl" language!!!!!
The answer to your math sheet is a play on words, please check the picture attached for the complete solution.
The joke is that 'fowl' is another word for 'chicken' but at the same time is similar to 'foul' which is a bad word!
Answer:
Answer is in explanation
Step-by-step explanation:
<em>1</em><em>ST</em><em> </em><em>STEP</em><em>:</em>
54÷6=9 (one ice skating lesson)
<em>2ND</em><em> </em><em>STEP</em><em>:</em>
$29.80-$9=$____ (FINAL ANSWER)
<em><u>Hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>helped</u></em>
