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valentina_108 [34]

3 years ago

10

How do you graph an equation and solve for x?

1 answer:

maria [59]3 years ago

5 0

A system of linear equations contains two or more equations example: y=0.5x+2 and y=x-2. The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.

hope this helps!

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Which of the following is equal to 5 4/9?<br><br> 5.49<br> 5.25<br> 7.25<br> 5.4

Natalija [7]

Answer:

5.4

Step-by-step explanation:

4/9 is .44444444

So 5 4/9 is 5.4

7 0

3 years ago

Read 2 more answers

7x(x+1.8)=0 please help !

lbvjy [14]

7x ( x + 1.8 ) = 0 → x = 0 or x = -1.8

<h3>Further explanation</h3>

Discriminant of quadratic equation ( ax² + bx + c = 0 ) could be calculated by using :

<h2>D = b² - 4 a c</h2>

From the value of Discriminant , we know how many solutions the equation has by condition :

D < 0 → No Real Roots

D = 0 → One Real Root

D > 0 → Two Real Roots

Let us now tackle the problem!

<u>Given :</u>

$7x ( x + 1.8 ) = 0$

<u>Solution :</u>

$(7x )( x + 1.8 ) = 0$

$(7x) = 0 \texttt{ or } (x + 1.8) = 0$

$x = 0 \div 7 \texttt{ or } x = 0 - 1.8$

$x = 0 \texttt{ or } x = - 1.8$

<h3>Therefore, the solution is x = { 0 , -1.8 }</h3>

<h3>Learn more</h3>

Solving Quadratic Equations by Factoring : brainly.com/question/12182022
Determine the Discriminant : brainly.com/question/4600943
Formula of Quadratic Equations : brainly.com/question/3776858

<h3>Answer details</h3>

Grade: High School

Subject: Mathematics

Chapter: Quadratic Equations

Keywords: Quadratic , Equation , Discriminant , Real , Number , Solution , Zero , Root

3 0

3 years ago

Read 2 more answers

Y-intercept = 4.5 and slope = -2.5<br> equation: y =<br> X +

Tju [1.3M]

Answer:

y=-2.5x+4.5

Step-by-step explanation:

y=mx+b

Please check out my question too, 75 points!

5 0

3 years ago

Rewrite the equation in graphing form. f(x)=x^2+6x+15

docker41 [41]

we are given

$f(x)=x^2+6x+15$

we can complete square

$f(x)=x^2+6x+9+6$

$f(x)=x^2+6x+3^2+6$

$f(x)=(x+3)^2+6$

so, graphing form is

$f(x)=(x+3)^2+6$ ..............Answer

3 0

3 years ago

Using Cramer's Rule, what are the values of x and y in the solutio

olya-2409 [2.1K]

Answer:

x = -3, y = 1

Step-by-step explanation:

To find the value of x and y, find the determinant of original matrix, which would be 21.

Then, substitute the value of x with the solutions to the equations and find the determinant of that matrix, which is -63.

Cramer's rule says that Dx ÷ D is the value of x. So, -63 ÷ 21 = -3.

So, the x-value is -3.

You can find the determinant of the y-value in the same way, and you'll find out that y = 1.

Hope this helped! :)

8 0

3 years ago