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marysya [2.9K]
3 years ago
12

Which of these expressions represents the sum of two rational numbers being rational?

Mathematics
1 answer:
GaryK [48]3 years ago
3 0

Answer:

i think its number 2 hope its correct

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Which of the following could be the equation of the function below?
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Answer:

y = 0.5 cosine (4 (x - pi/2)) - 2

Step-by-step explanation:

Taking the general form:

y = A cosine (Bx - Cπ)) + D

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C: 2π

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The range of this function is:

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range = [-0.5-2, 0.5-2]

range = [-2.5, -1.5]

Which coincides with "It has a maximum at negative 1.5 and a minimum at negative 2.5"

At x = 0, the function value is:

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As indicated in "a curve crosses the y-axis at y = negative 1.5"

The period of the function is:

period: 2π/B

period = 2π/4 = π/2 or 2 cycles at π

as described in "It goes through 2 cycles at pi."

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