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LekaFEV [45]
3 years ago
9

Which graph represents the function y = cos(4x)? Answer is graph B

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

Let the equation of the cosine function is,

y = Acos(Bx)

From the graph attached,

A = Amplitude = \frac{1-(-1)}{2}

   = 1

B = \frac{2\pi}{\text{Period}}

B = \frac{2\pi}{\frac{\pi}{2}-0}

B = \frac{4\pi}{\pi}

B = 4

Therefore, equation of the cosine wave given in the graph will be,

y = 1.Cos(4x)

y = Cos(4x)

nirvana33 [79]3 years ago
7 0

Answer:

B

Step-by-step explanation:

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liberstina [14]

Answer:

F) A=(12*12)+((6*12)/2)

Step-by-step explanation:

We can find the answer by breaking up the area into to parts: the square and the triangle

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This gives us 12*12 which is shown in the first part of each equation

To find the area of the triangle, we must use the formula A= (base * hight)/2

We know the hight is 12 because the hight is the same as the hight or side length of the square, but we still need to find the length of the base of the triangle

Since we know the total length of the bottom of the combined square and triangle is 18 and we know the side length of the bottom of the square is 12 (given to us at the top side of the square and we know the side of a square are of equal length)

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Plugging in these numbers we get:

Length of triangle base = 18-12 which equals 6

So length of triangle base is 6

Going back to our equation for area of a triangle A=(base*hight)/2

We can plug in our numbers using 6 for the base and 12 for the height

A=(6*12)/2

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A= (12*12) + ((6*12)/2)

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Step-by-step explanation:

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