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AlladinOne [14]
3 years ago
8

02)a pair of equations is shown below. 3x − y = 9 y = −2x + 11 if the two equations are graphed, at what point do the lines repr

esenting the two equations intersect? (4, 3) (3, 4) (9, 11) (11, 9)
Mathematics
1 answer:
denis23 [38]3 years ago
7 0
 3x - y = 9
-2x -y = -11   |* -1

3x - y = 9    } +
2x+y = 11
-------------
5x    / =20
x=20:5
x=4

3x   -y = 9
3*4 - y = 9
12 - y= 9
y=12-9
y=3

(4,3) is the solution
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just olya [345]
No, if x=1 then you get an undefined statement
if you want to try to simplify then

x^2-3x+2=(x-1)(x-2)

((x-1)(x-2))/(x-1)=x-2 is that true?
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true
but, the x-1 is trickey

if x=1, then the denomenator becomes 0 and the equation is undefined
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answer if no
but if your teacher says that it is true because of simplification tell that x=1 doesn't work
8 0
3 years ago
Find the factors of function f. Based on the factors, which statement is true about the graph of function f? A. The graph crosse
Bas_tet [7]

The option (D) the graph crosses the x-axis at the point (2, 0) is correct because the graph crosses x-axis at points (0, 0), (5, 0), (-2, 0), and (2, 0).

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

The question is incomplete.

The correct question is in the picture please refer to the attached picture.

We have a function:

f(x) = x⁴ - 5x³ - 4x² + 20x

By using factorization method:

\rm f(x) =x\left(x^3-5x^2-4x+20\right)

\rm f(x) =x\left(x-5\right)\left(x+2\right)\left(x-2\right)

By using zero product rule:

x = 0

x = 5

x = -2

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The graph crosses the x-axis at points (0, 0), (5, 0), (-2, 0), and (2, 0)

Thus, the option (D) the graph crosses the x-axis at the point (2, 0) is correct because the graph crosses the x-axis at points (0, 0), (5, 0), (-2, 0), and (2, 0).

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brainly.com/question/5245372

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5 0
2 years ago
Sara covers the top of a box with squares of paper that are 1 square centimeter: she uses 48 squares with 6 squares in each row.
scZoUnD [109]

Answer:

Sarah makes 8 rows of squares.

Step-by-step explanation:

Given:

Number of squares she uses = 48

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Solution:

Let the number of rows she can make be 'x'.

Now we can say that;

Number of rows she can make is equal to Number of squares she uses divided by number of squares in each row.

framing in equation form we get;

x=\frac{48}{6}=8\ rows

Hence Sarah makes 8 rows of squares.

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