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Ainat [17]
3 years ago
10

Which of the following is a polynomial with roots 4, 6, and −7?

Mathematics
2 answers:
aleksklad [387]3 years ago
8 0
Try plugging in 4,6, and -7 into the x's 
otez555 [7]3 years ago
3 0

Answer:

option B

Step-by-step explanation:

If any polynomial has roots 4, 6, and (-7) then x - 4, x- 6, and x+7 will be the 0 roots of the polynomial.

Then the polynomial can be written in the form of f(x) = (x-4) (x-6) (x+7)

Now we further solve it to get the simpler form of the polynomial.

f(x) = (x-6) [x² + 7x - 4x - 28]

    = (x-6) [x² + 3x - 28 ]

    = x³ + 3x² - 28x - 6x² - 18x + 168

    = x³ - 3x² - 46x + 168

This polynomial matches with option B

So option B will be the option.

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Ashely is making $500 a week at her job. She receives a 20% pay raise. A year later she takes a 5% pay cut. How much money does
zheka24 [161]

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<em>$570 a week</em>

Step-by-step explanation:

<u>Percentage Calculations </u>

One tricky fact about percentages is that they are usually performed over the last computed quantity. It makes them non-additive. For example, a raise of 10% followed by a 10% some time later, is NOT a 20% of total raise

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