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AURORKA [14]
3 years ago
7

Which of the following equations demonstrate that the set of polynomials is not closed under the certain operations?

Mathematics
1 answer:
Vesnalui [34]3 years ago
8 0

Answer:

D. Division: (x² - 5x + 3) ÷ (x-5) = x + 3/(x - 5)

Step-by-step explanation:

Polynomials are closed under subtraction and multiplication because any subtraction or multiplication of polynomials gives as result another polynomial.

As can be seen in option D, polynomials aren't closed under division because not every division between polynomials gives as result another polynomial.

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I need help with #10!
DiKsa [7]

Answer: 6 years old.

Step-by-step explanation:

For this exercise let "x" represents your present age.

According to the information provided in the exercise, you know that  In three years, Chad will be three times your present age.

Then, your age in three years can be represented with the following expression:

x+3

Knowing at that time Chad's age will be three times yours and you will be half as old as old as Chad, you can write the following equation to represent this situation:

x+3=\frac{3x}{2}

Therefore, the final step is to solve for "x" in order to find its value.

You get that this is:

2(x+3)=3x\\\\2x+6=3x\\\\6=3x-2x\\\\x=6

7 0
3 years ago
-.25y is less than or equal to 16
jolli1 [7]
-25 is less than 16 because it’s a negative number
8 0
2 years ago
PLEASE HELP ME! I WILL GIVE BRAINLIEST
RSB [31]

Answer:

  • 30 cm²

Step-by-step explanation:

The shaded area is the difference of the total area and the white triangle.

The white triangle has base of 9 cm and height of 4 cm.

<u>Its area is:</u>

  • A = 1/2*9*4 = 18 cm²

<u>Area of rectangle:</u>

  • A = 12*4 = 48 cm²

<u>The shaded area:</u>

  • 48 - 18 = 30 cm²
3 0
2 years ago
Graph the function.
Soloha48 [4]

Answer:

y =x+1

Step-by-step explanation:

The y intercept is 1

The slope is positive

We go up 1 and to the right 1

y = mx+b  where m is the slope and b is the y intercept

y = 1x+1

y =x+1

8 0
2 years ago
Admission to a carnival is $5 and each game at the carnival costs $0.85. You have $15 to spend on admissions and games. What is
Nadusha1986 [10]

Answer: 11 games

Step-by-step explanation:

With $15,

First step, subtract cost of admission= $5

$15 - $5 = $10

If one game costs $0.85

× games = $10/ $0.85

=11.7

The maximum number of games he can play is 11.

I hope this is clear.

3 0
3 years ago
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