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aalyn [17]
4 years ago
11

Which expressions are polynomials? Select each correct answer. 20x² + y 20x² 20x2+y12 20x2/y

Mathematics
2 answers:
tia_tia [17]4 years ago
7 0

Answer:

A.  20x² + y and B. 20x² are polynomials.

Step-by-step explanation:

Let's review each of the expressions given to define which are polynomials:

A. 20x² + y

It's a polynomial because all of the variables have integer exponents that are positive .

B. 20x²

It's a polynomial because the variable of this monomial  have integer exponent that is positive .

C. 20x² + y ^1/2

It's not a polynomial because a term has a fraction exponent (y ^1/2).

D.  20x²/y

It's not a polynomial because a term has a negative exponent (y ^-1) and there is a variable in the denominator of a fraction.

loris [4]4 years ago
7 0

Answer:

20x²

20x² + y

Step-by-step explanation:

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earnstyle [38]

Answer:

Step-by-step explanation:

Use Pythagorean theorem.

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5 0
3 years ago
Working Two Jobs. Maggie has a job working in an office for $10 an hour and another job driving a tractor
kicyunya [14]

Answer:

x*$10 + y*$16 = $480

Step-by-step explanation:

The question seems incomplete, and after a search online I've found a lot of similar questions with similar numbers, so I really can not be sure of which one is the complete question.

I suppose that we want to get a linear equation that describes the given situation:

Let's define two variables:

x = number of hours that Maggie works in the office (for $10 each)

y = number of hours that Maggie works driving a tractor (for $16 each).

Then the total amount of money that Maggie gets is:

x*$10 + y*$16

Now we know that she earns $480 per week, then we know that:

x*$10 + y*$16 = $480

This is a linear equation we wanted to get, where (just to be complete) we need to add the restrictions:

x ≥ 0

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(this means that she can not work a negative number of hours).

5 0
3 years ago
nina wants to put color tiles on a square . 3 color tiles fit acroos the top of the square . how many rows and colum of tiles wi
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3 years ago
What is (2n)^4 without exponent
g100num [7]
(2n)^4 = (2n)(2n)(2n)(2n)

(2n)(2n)(2n)(2n) is your answer

hope this helps
3 0
3 years ago
Which equation can be used to find the value of b if side a measures 8.7 cm? 8.7 + b = 54.6 17.4 + b = 54.6 26.1 + b = 54.6 34.8
Gnom [1K]
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