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3 years ago

Which expression is not a polynomial? A. 3x + 5 B. 2/5x - 21 C. 5 D. x^-3 + 5x

Mathematics

1 answer:

Anettt [7]3 years ago

7 0

Answer:

C. 5

Step-by-step explanation:

"Polynomial" means consisting of several terms, or more than one term.

In A, we see that there are 2 terms (3x and 5), and so it is a polynomial, specifically a binomial.

In B, we also see 2 terms (2/5x and -21), and so it is also a polynomial, specifically a binomial.

In C, we only see one term (5), and so it is a monomial, or having only one term.

In D, we can see 2 terms (x^-3 and 5x), and so it is also a polynomial, specifically a binomial.

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Nataliya [291]

Answer:

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Step-by-step explanation:

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3 years ago

A regular polygon

olga55 [171]

Answer:

3.6° = ext. angle

Step-by-step explanation:

For the shape to be a regular polygon, all interior angles must be congruent.

We can find every interior angle by using the formula:

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We also know that int. and ext. angles are supplementary!

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3 years ago

Which amount is larger and by how much? A positive number a or the same number a decreased by 50% and then increased by 50% of t

ankoles [38]

Answer:

Step-by-step explanation:

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3 years ago

Sarah bought a lawnmower for $320. She signed up for the buy now pay later plan at the store with the following conditions: $100

marishachu [46]

Cost of the lawnmower bought by Sarah = $320
Amount of down payment made by Sarah = $100
Amount paid by Sarah in 12 months = (12 * 25) dollars
= 300 dollars
Total amount paid by Sarah = (300 + 100) dollars
= 400 dollars
Excess amount paid as interest by Sarah = (400 - 320) dollars
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Actual yearly rate of interest paid by Sarah = (80/320) * 100 percent
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3 years ago

Integrate Sec (4x - 1) Tan (4x - 1) Dx

Delicious77 [7]

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$\bf \displaystyle\int~\cfrac{~~\begin{matrix} sin(4x-1) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~ }{u^2}\cdot \cfrac{du}{-4~~\begin{matrix} sin(4x-1) \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\implies -\cfrac{1}{4}\int\cfrac{1}{u^2}du\implies -\cfrac{1}{4}\int u^{-2}du \\\\\\ -\cfrac{1}{4}\cdot \cfrac{u^{-2+1}}{-1}\implies \cfrac{1}{4}\cdot u^{-1}\implies \cfrac{1}{4u}\implies \cfrac{1}{4cos(4x+1)}+C$

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3 years ago