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icang [17]
3 years ago
6

Which expressions are polynomials?

Mathematics
2 answers:
statuscvo [17]3 years ago
7 0

Answer:

They all are polynomials.

Step-by-step explanation:

Given : Following expression

1)  x^2+5x^{15}

2)  -x^2+5x

3) 6x^2+5x

4) -7x^2+53x

The following all are polynomials because polynomials are:

An expression consisting of variables and coefficients or expression more than two algebraic terms and the terms that contain different powers of the same variable(s) involve operations addition , subtraction, multiplication and non-negative integer exponent of variables.

So when we see to these functions they all are a mixture of a polynomial.

Nina [5.8K]3 years ago
7 0

Answer:

The answer is actually just two of them, the second and third.

Step-by-step explanation:

Here is a screenshot showing the graded answer as correct.

The two with fractions are NOT polynomials!

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Amelia's account balance is $16. If she uses her debit card to buy a $32
zimovet [89]

Answer:

-$16

Step-by-step explanation:

16-32=-16

5 0
3 years ago
I need help finding our the perimeter
barxatty [35]

Answer:

11x + 10y - 2w

Step-by-step explanation:

Hello!

To solve for the perimeter, we add up the like terms.

What are like terms?

Like terms are terms with the same variable and degree. 4x and 5y are NOT like terms because the variable is not the same. However, 4x and 3x are like terms, as adding them gives us 7x.

4x and 4x² are not like terms, because the degree of 4x is 1 (degree means the largest exponent), but the degree of 4x² is 2.

Solve for Perimeter:

Combine the like terms by adding them up.

  • Perimeter = (8x - 4w) + (3y + 2w) + (3x + 7y)
  • P = 8x - 4w + 3y + 2w + 3x + 7y
  • P = 8x + 3x + 3y + 7y - 4w + 2w
  • P = 11x + 10y - 2w

The perimeter is 11x + 10y - 2w

3 0
2 years ago
100 points.<br> Find the surface area of the triangular prism. The unit is cm^2
nikklg [1K]
First we find the area of the two triangles on each side (keep in mind that they are equal/congruent to each other):

(24*10)/2 = 120 cm^2

Then you find the areas of the three rectangles that are left:

24*19 = 456 cm^2
26*19 = 494 cm^2
10*19 = 190 cm^2

Finally, to find the surface area of the prism:

120+120+456+494+190 = 1,380 cm^2

6 0
3 years ago
Read 2 more answers
Kyle's car repair costs $1000. He has 2 coupons which could save him $80 off of $1000, or 15% off of $1000. EXPLAIN WHICH COUPON
never [62]
Answer:

Kyle would save more using his 15% off of $1000 coupon.

Explanation:

15 ÷ 100 • 1000 = 150

1000 - 150 = $850

$150 is the amount the 15% coupon took off.

$850 is the amount Kyle will pay.

vs.

1000 - 80 = $920
6 0
3 years ago
Solve x2-x-5/2 = 0 using the quadratic formula.<br><br> the answer choices are in the picture
allsm [11]

Answer:

Exact Form:  x =( 1 ± √ 11) /2

It's the first one.

Step-by-step explanation:

Solve the equation for  x  by finding  a ,  b , and  c  of the quadratic then applying the quadratic formula.

7 0
3 years ago
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