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3 years ago

Does the table represent a function? Why or why not?

Mathematics

2 answers:

Goryan [66]3 years ago

4 0

Answer:

Step-by-step explanation:

one x value cant go to two y values

Tanzania [10]3 years ago

4 0

Answer:

No....Not at all

You can select option A as the correct answer

Step-by-step explanation:

There can be two possibilities

x is an independent variable and y is a dependent variable
y is an independent variable and x is a dependent variable

From the definition of Function, We know, the value of a dependent variable corresponds to exactly one value of the independent variable

For possibility 1, For x = 5 and 9, y = 2 & for x = 5 and 7, y = 3

So this can't be a function

For possibility 2, For y = 3 and 2, x = 5

So this can't be a function

Hope you have understood this.....

ask me if you have any confusion.....

if you liked it pls mark it as the brainliest

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Let x represent the regular price of any book in the store. Write an expression that can be used to find the sale price of any b

arsen [322]

Answer:

(a) The sale price of any book in the store is 0.70 x.

(b) The regular price of the book bought by Jerome was $12.80.

Step-by-step explanation:

The complete question is:

All books in a store are being discounted by 30%. Let x represent the regular price of any book in the store. (a) Write an expression that can be used to find the sale price of any book in the store. (b) Jerome bought a book on sale at the store. The sale price of the book was $8.96. Write an equation to determine the regular price of the book Solve your equation to find the regular price of Jerome's book to the nearest cent.

Solution:

The regular price of any book in the store is denoted by, x.

(a)

The discount percentage is: d% = 30%.

The sales price of the book is:

Sales Price = Regular Price - Discount

$SP =x-(x\times 30\%)$

$=x-0.30x\\=0.70x$

Thus, the sale price of any book in the store is 0.70 x.

(b)

The sales price f book bought by Jerome is, SP = $8.96.

Jerome bought the book at the same discount, i.e. 30%.

Compute the regular price of the book bought by Jerome as follows:

$SP =x-(x\times 30\%)$

$8.96=0.70x$

$x=\frac{8.96}{0.70}$

$=12.80$

Thus, the regular price of the book bought by Jerome was $12.80.

3 0

3 years ago

Perpendicular to y=4x-7; contains the point (4,3)

san4es73 [151]

Okay, so a general rule for finding perpendicular lines in the form of y = mx + b is y = (-1/m) + b.
First, let's ignore b (-7) because we're going to find that later.
A perpendicular line to y = 4x + b is y = -1/4x + b.
Alright, so now let's plug in the values. They are in the form of (x,y), so let's plug them in accordingly.

3 = -1/4(4) + b
3 = -1 + b
b = 4
y = -1/4x + 4
So a line perpendicular to y = 4x - 7 is y = -1/4x + 4.

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3 years ago

HELPP PLEASE ILL MAKE YOU THE BRAINIEST Find the area of the rhombus

iogann1982 [59]

Answer:

D1×D2/2sq

445×5= 225

225/2

=112.5

5 0

2 years ago

n the diagram, polygon ABCD is reflected across to make polygon A'B'C'D'. Which statement must be true?

Veronika [31]

True polygon is the abcd polygon

8 0

3 years ago

What is the complete factorization of the polynomial below? x^3+ 5x^2- x-5

koban [17]

Answer:

(x-1)(x+1)(x+5)

Step-by-step explanation:

x^3+5x^2 - x-5=

x^3-x+5x^2-5=

x(x^2-1) +5(x^2 - 1)=

(x^2- 1)(x+5)=(*)

(x-1)(x+1)(x+5)

(*) A^2 - B^2 =(A-B)(A +B)

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3 years ago

Does the table represent a function? Why or why not?￼

Does the table represent a function? Why or why not?