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Arturiano [62]
1 year ago
10

Find the zeros of the function p(x) = -9x^2 + 1

Mathematics
1 answer:
Musya8 [376]1 year ago
6 0

Step-by-step explanation:

zeroes = x intercept.

to find the x intercept we let y or in this case p(x) = 0

Hence,

-9x^2 + 1 = 0

-9x^2 = -1

x^2 = 1/9

x = 1/3

x = -1/3

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Answer:

Third option

Step-by-step explanation:

We can't factor this so we need to use the quadratic formula which states that when ax² + bx + c = 0, x = (-b ± √(b² - 4ac)) / 2a. However, we notice that b (which is 6) is even, so we can use the special quadratic formula which states that when ax² + bx + c = 0 and b is even, x = (-b' ± √(b'² - ac)) / a where b' = b / 2. In this case, a = 1, b' = 3 and c = 7 so:

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Which expression has value of 15 when = 12?
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Create an expression that is equivalent to 79.86-17.61
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b. The supplements of congruent angles are congruent

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Use the exponential decay​ model, Upper A equals Upper A 0 e Superscript kt​, to solve the following. The​ half-life of a certai
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Answer:

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Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

A=A_0 e^{kt}

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If the half life of the substance is 19 years,

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\frac{A_0}{2}=A_0 e^{19k}

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Taking ln both sides,

\ln(0.5) = \ln(e^{19k})

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Hence, approximately the substance would be 78% of its initial value after 7 years.

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