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Gelneren [198K]
3 years ago
9

Under which operations are polynomials closed

Mathematics
1 answer:
Helga [31]3 years ago
6 0
Addition,subtraction,and multiplication
You might be interested in
PLS HELP!! If f(x) = 2x^2-4x and g(x) =5-2x, evaluate f(x)-g(x) for x=5
anastassius [24]
To solve this equation you need to first start by writing out the f(x)-g(X).
The equation should be 2x^2-4x-5+2x. 
You then want to simplify the equation, I got 2x^2-2x-5.
You then want to plug in the x=5 for all the x's in the equation. 
2(5)^2-2(5)-5 would be the equation. 
The answer you get should be 35.
6 0
3 years ago
Which table shows a function whose range has exactly three elements
Rudik [331]
<h2>Answer:</h2>

The table which shows that a function's range has exactly three elements is:

         x      y

         3      8

        4      6

        5      12

        6       8

<h2>Step-by-step explanation:</h2>

<u>Domain of a function--</u>

The domain of a function is the set of all the x-values i.e. the value of the independent variable for which a function is defined.

<u>Range of a function--</u>

It is the set of all the y-value or the values which are obtained by the independent variable i.e. the values obtained by the function in it's defined domain.

a)

     x      y

     1      4

     2      4

     3       4

Domain: {1,2,3}

Range: {4}

Hence, the range has a single element.

b)

     x      y

     3      8

     4      6

     5      12

     6       8

Domain: {3,4,5,6}

Range: {6,8,12}

Hence, the range has three element.

c)

     x      y

     0     5

     2      9

     0      15

This relation is not a function.

because 0 has two images.

0 is mapped to 5 and 0 is mapped to 15.

d)

     x      y

     1      4

     3     2

    5      1  

    3      4

This relation is not a function.

because 3 has two images.

3 is mapped to 2 in the ordered pair (3,2) and 3 is mapped to 4 in the ordered pair (3,4)

5 0
3 years ago
Read 2 more answers
A tree 20 feet tall has a shadow of 15 feet. How tall is Biff if his<br> shadow is 36 inches tall?
sweet-ann [11.9K]
I Think the answer is 31 because 20-5 is 15 so 36-5 is 31
3 0
3 years ago
How to find slope and writting a equation with tables
olga_2 [115]

Answer:The equation of a line is written as ​y=mx​+​b​, where the constant ​m​ is the slope of the line, and the ​b​ is the ​y​-intercept.

Step-by-step explanation:

3 0
2 years ago
Luke's Motel rents rooms with 2 beds for $65 and rooms with 1 bed for $56. On a given night Luke's Motel takes in $4836, and twi
Marat540 [252]
52 double bed rooms were rented, and that means there were 26 single bed rooms rented. 
7 0
3 years ago
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