Answer:
The cosine function that models this reaction is:
Step-by-step explanation:
The general cosine function has the following form
Where A is the amplitude: half the vertical distance between the highest peak and the lowest peak of the wave.
is the period: time it takes the wave to complete a cycle.
k is the vertical displacement.
The maximum temperature is 160 and the minimum is 20. Then the amplitude A is:
The reaction completes a cycle in 8 hours
Then the period is 8 hours.
Thus:
The function is:
when 
y is minumum therefore 
So
Now we substitute 
in the function and solve for k
Finally
Answer:
A = 2x²-3x-5
Step-by-step explanation:
Given that,
The length of the bedroom, l = (2x-5)
Width of the bedroom, b = (x+1)
We need to find an equation for the area of the bedroom. We know that,
Area of a rectangle = lb
Put all the values,
A = (2x-5)(x+1)
= 2x²+2x-5x-5
= 2x²-3x-5
Hence, the area of the bedroom is equal to 2x²-3x-5.
The answer should be 8x^3-36x^2+54x-27
To get this you have to do (2x-3)(2x-3)(2x-3) and distribute through each parenthesis. Hope this helps
<u>The apothecary system</u><u> uses the minim as the basic unit of liquid measure and the grain as the basic unit of solid measure.</u>
What is apothecary measurement?
- The apothecary system was once a system of weights and measurements used for drug prescription and dispensing.
- A pound was divided into 12 ounces in the English version, which also divided an ounce into eight drams or drachms and a dram into three scruples, or 60 grains.
What are the units of the apothecary system?
The grain, scruple (20 grains), dram (3 scruples), ounce (8 drams), and pound—a ancient scale of weight used in the British Isles for measuring and distributing pharmacological goods (12 ounces).
Learn more about apothecary system
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Sure thing!
Length = 14 in
Area = 294 in^2
