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oksian1 [2.3K]
2 years ago
8

Expand. Your answer should be a polynomial in standard form. -p^2(p^2-p-1)=

Mathematics
1 answer:
kiruha [24]2 years ago
8 0

Answer:

Step-by-step explanation:

Use distributive property. Then use exponent law.

Exponent law used here = a^{m}*a^{n}=a^{m+n}

-p^{2}(p^{2} - p - 1) = -p^{2}*p^{2} - p *(-p^{2}) - 1*(-p^{2}) \\\\= -p^{4} + p^{3}+p^{2}

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Answer:

The second answer option

Step-by-step explanation:

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3 years ago
A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p
charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\

We calculate the standar deviation:

\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176

We calculate the value of the test statistic:

z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85

So the value of the test statistic is -0.85.

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3 years ago
1 cm = 500km the ratio is 1 to
Murrr4er [49]

Answer:

1:500

Step-by-step explanation:

Since it has already given you the conversion factor, the ratio is 1:500, where every 1 cm is 500 km.

4 0
3 years ago
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2 years ago
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Answer:

X=7

Step-by-step explanation:

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