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user100 [1]
2 years ago
9

Brainliest!!!!!!

Mathematics
2 answers:
Nataly [62]2 years ago
4 0

Answer:

2x² - 12x + 13

Step-by-step explanation:

Given following:

  • k(x) = 2x² - 5
  • p(x) = x - 3

Start solving from right to left across the function.

Steps:

  • k[p(x)]
  • k[x - 3]
  • 2(x - 3)² - 5
  • 2(x² - 6x + 9) - 5
  • 2x² - 12x + 18 - 5
  • 2x² - 12x + 13
SOVA2 [1]2 years ago
4 0

Answer:

2x² - 12x + 13

Step-by-step explanation:

Steps:

k[p(x)]

k[x - 3]

2(x - 3)² - 5

2(x² - 6x + 9) - 5

2x² - 12x + 18 - 5

2x² - 12x + 13             pls brainlest

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I need the answer fast please
shusha [124]
The diameter of the circle is needed. But to solve, you would simply multiply the diameter of the circle by pi (3.14).
3 0
2 years ago
Hey plsss help meeeeee
nalin [4]

Answer:

The first, third, and fourth answer choices represent a function.

Step-by-step explanation:

A relation is a relationship between sets of values. The two quantities that are being related to each other are the input (x-variable) and the output (y-variable). But relations in general aren't always a good way to relate between x and y.

Say that I have situation where I want to give <em>x </em>dollars to the cashier so he can change them to <em>y</em> quarters. Here is a "example" of the relation:

Dollars (x) | Quarters (y)            

----------------------------------              

       0       |          0                      

        1       |          4                      

       2       |          8

       2       |          12

Do you see something wrong here? Yes! We all know that you can't exchange 2 dollars for 12 quarters. You can only exchange 2 dollars for 8 quarters and only 8 quarters. This is a general reason why we don't rely on general relations for real-life situations. One x-variable does not exactly map to one and only one y-variable.

However, a relation that can map one x-variable to one and only one y-variable is known as a function. Let's make the above example an actual function to prove a point:

Dollars (x) | Quarters (y)            

----------------------------------              

       0       |          0                      

        1       |          4                      

       2       |          8

       3       |          12

Now, the 3 dollars make 12 quarters as it should. This is how a function should look like.

There are two ways to check if a relation is a function. On a relation, table, or a set of ordered pairs, you have to make sure there is no "x-variable" that repeats. All x-values of a relation have to be unique in order to be a function. On a graph, you can also perform the Vertical Line Test. If you draw vertical lines over a relation and if the lines cross only once, then it is a function. If not, it fails the Vertical Line Test.

So to answer you're question, the first, third, and fourth choices are functions because they all have unique x-variables. The second choice is not a function because it fails the Vertical Line Test.

7 0
2 years ago
What is the value of x?
Rashid [163]

Answer:

X=98°

Step-by-step explanation:

53° + 45° = 98

98-180= 82

every triangle is always equal o 180°

so...   53°+ 45°+ 82° = 180

to find x you need to subtract 82 from 180 which is 98

<em>remember its important to find the inner degree before the outer.</em>

7 0
3 years ago
A scale drawing of a kitchen is shown below. The scale is 1 : 20.
Arada [10]

Answer:

0.138889

Step-by-step explanation:

formula is to divide by 144

which first you multiply 5×4 which gives you 20

therefore 20÷144

=0.138889

3 0
2 years ago
Read 2 more answers
An uncle wills 3000.00 to his 2 nieces and one nephew. The older niece is to receive twice what the younger niece receives and t
Semenov [28]

Answer:

Nephew receive 1500.00

Older niece receive 1000.00

Younger niece receive 500.00

Step-by-step explanation:

Let assume a variable x,y,z for the niece, older niece and the nephew respectively.

Y= 2x (Twice the younger niece)

Z= x + y. (Sum of the two nieces)

Since y = 2x

Z = x+2x

Z= 3x

Therefore:

X = 1x

Y = 2x

Z = 3x

So the will will be shared among them in the ratio

Nephew : older niece : younger niece

3 : 2 : 1

Nephew. 3/6 x 3000 = 1500.00

Older niece 2/6 x 3000 = 1000.00

Younger niece 1/6 x 3000 = 500.00

8 0
3 years ago
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