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3 years ago

9-8x^2+2x^4 is this a trinomial

Mathematics

1 answer:

Svetradugi [14.3K]3 years ago

8 0

Yes. A monomial is a term composed by a coefficient and powers of variables multiplied with each other, for example

$3xy^3z^2$

is a monomial.

In your case, the monomials are

$9,\quad 8x^2,\quad 2x^4$

As the name suggests, a trinomial is the sum of three monomials, which is exactly your case.

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2 years ago

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Downtown Store North Mall Store

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Degree of freedom = $\frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}$

Degree of freedom =36

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Confidence interval = $(x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)$

Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

4 0

3 years ago

9-8x^2+2x^4 is this a trinomial​

9-8x^2+2x^4 is this a trinomial