Answer:
The answer is 15.
Step-by-step explanation:
Plug in the numbers for the a and b values individually. For the numerator, 5(6) is the same thing as 5 * 6 = 30. For the denominator, 1/4^2 would equal to 1/16 and when you multiply it by 32, you will get 2.
To clear things up, the fraction should be 30/2 and your answer should be 15 as a result.
For a better understanding of the explanation provided here kindly go through the file attached.
Since, the weight attached is already at the lowest point at time, t=0, therefore, the equation will have a -9 as it's "amplitude" and it will be a Cosine function. This is because in cosine function, the function has the value of the amplitude at t=0.
Now, we know that the total angle in radians covered by a cosine in a given period is
and the period given in the question is t=3 seconds. Therefore, the angular velocity,
of the mentioned system will be:

Combining all the above information, we see that the equation which models the distance, d, of the weight from its equilibrium after t seconds will be:

Thus, Option B is the correct option. The attached diagram is the graph of the option B and we can see clearly that at t=3, the weight indeed returns to it's original position.
Step-by-step explanation:
Split the figure into 2 parts, triangle and rectangle (I believe you know what I'm talking about)
area of triangle = 1/2 x 20 x (16-7) = 90cm^2
area of rectangle = 20 x 7 = 140cm^2
total area = 90 + 140 = 230cm^2
Topic: Mensuration
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Answer:
A) state (liquid to solid)
C) temperature (extremely hot to cool)