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Kruka [31]
3 years ago
5

Which polynomial is the perfect square trinomial? And why??? Help Please!!

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0
<h3>Answer:</h3>

See the attached

<h3>Step-by-step explanation:</h3>

When you square the binomial (a -b), you get ...

... (a -b)² = a² -2ab +b²

That is, both the a² and b² terms have positive signs, and the middle term is twice the product of the roots of the squared terms.

The last two selections have negative signs on the constant, so cannot be perfect square trinomials.

The first selection has a middle term that is -ab, not -2ab, so it is not a perfect square trinomial, either.

The second selection is the correct one:

... 4a² -20a +25 = (2a +5)²

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A manager wants to test whether two normally distributed and independent populations have equal variances. the appropriate test statistic for this test is a "F-statistics."

<h3>What is F-statistics?</h3>

An F statistic is a value obtained after performing an ANOVA test or even a regression analysis to determine whether the means of two populations differ significantly.

Some key features regarding the F-statistics are-

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3 years ago
If you have a box with a volume of 567 and 12 is the leangth, and 8 is the width, what is the height of the box?
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Step-by-step explanation:

Given:

Volume of box = 567

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We know that

Volume of the cuboid is given by the formula which is

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Now we are given all the values in the question

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Volume = Length * Width * height

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