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3 years ago

3(2x - 5) - 8x = -2(x - 1)

Mathematics

1 answer:

galina1969 [7]3 years ago

8 0

3(2x - 5) - 8x = -2(x - 1)

Use the distributive property:

6x-15 - 8x = -2x +2

Combine like terms:

-2x - 15 = -2x +2

Since both sides have -2x, but the other numbers are not the same, this equation does not have a solution.

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3 years ago

For the function y=-3+ cos (x + 4)], what is the minimum value?

Mrac [35]

Answer:

-4 is the mimumum of y=-3+cos(x+4)

Step-by-step explanation:

The minimum value of y=cos(x) is -1.

The minimum value of y=cos(x+4) is still -1; the +4 inside the cosine function only affected the horizontal shift.

The minimum value of y=-3+cos(x+4) is -3-1 which is -4. This brought the graph down 3 units so if the minimum was previously -1 and it got brought down 3 units then it's new minimum is -4.

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