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devlian [24]
2 years ago
9

Can someone help me with this pls

Mathematics
2 answers:
BabaBlast [244]2 years ago
6 0

\huge\text{Hey there!}

\huge\textbf{What is the quadratic formula?}

\rm{x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}}

\textsf{Or even}

\rm{ax^2 + bx + c = 0}

\huge\textbf{What are we looking for?}

\rm{9x^2 + 3x - 2 = 0}

\huge\textbf{What are the labels in the equation?}

\mathsf{a \rightarrow 9}\\\\\mathsf{b\rightarrow 3}\\\\\mathsf{c \rightarrow -2}

\huge\textbf{Solving for your equation:}

\rm{x = \dfrac{-(3)\pm \sqrt{3^2 - 4(9)(-2)}}{2a}}

\huge\textbf{Simplify it:}

\rm{x = \dfrac{-3\pm \sqrt{81}}{18}}

\rm{x = \dfrac{1}{3}\ or\ x = - \dfrac{2}{3}}

\huge\textbf{Therefore, your answer should be:}

\huge\boxed{\frak{\mathsf{x} = \dfrac{1}{3}\ or\ \mathsf{x} = - \dfrac{2}{3}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

Oksi-84 [34.3K]2 years ago
4 0

Answer:

x = 1/3 or x = -2/3

Step-by-step explanation:

Let's solve your equation step-by-step.

9x2+3x−2=0

For this equation: a=9, b=3, c=-2

9x2+3x+−2=0

Step 1: Use quadratic formula with a=9, b=3, c=-2.

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{-(3)\pm\sqrt{(3)^2-4(9)(-2)} }{2(9)}

x=\frac{-3\pm\sqrt{81} }{18}

x = 1/3 or x = -2/3

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tigry1 [53]

Answer:

4

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3.14159265358979323846264338327952884197169393751

3 0
3 years ago
HELP PLEASEEE!!!! I START SCHOOL TOMORROW
ohaa [14]

Answer:

4. The range is -2 ≤ y ≤ 4

5. The domain is {-2 , -1 , 0 , 3.5 , 4.2}

6. The relation is not a function

Step-by-step explanation:

* Lets explain how to solve the problem

# Question 4:

- The range of the function is the values of all y (output) which is

 corresponding to the values of all x (input)

- The figure is a stare, the values of x is from -4 to 4

∴ The domain is -4 ≤ x ≤ 4

- The corresponding values of y are from -2 to 4

∴The range is -2 ≤ y ≤ 4

# Question 5:

- The table represent a relation between x and y

- x is the input of the relation

- y is the output of the relation

∵ The input of the relation is called the domain of it

∴ The domain of the relation is all values of x in the table

- the values of x are -2 , -1 , 0 , 3.5 , 4.2

∴ The domain is {-2 , -1 , 0 , 3.5 , 4.2}

# Question 6:

- The relation can be a function if each ordered pair has a

  unique value of x (input)

- That means every x (input) has only one y (output)

- Ex : The relation {(a , b) , (c , d) , (a , f)} is not a function because

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∵ The relation is {(-4 , 0) , (-3 , 0) , (-2 , 1) , (1 , -2) , (-3 , 4)}

∵ The x = -3 has two values of y 0 and 4

∴ The relation is not a function

7 0
3 years ago
Select the correct answer from each drop-down menu. In the coming year, a vehicle manufacturer has decided to manufacture 150 ve
dezoksy [38]

Answer:

Given:

v = 150d

v represents company's production for the coming year

d represents the number of days

150 is the daily production

The rate of change of the function representing the number of vehicles manufactured for the coming year is CONSTANT (150) , and its graph is a STRAIGHT LINE . So, the function is a LINEAR function.

Step-by-step explanation:

7 0
3 years ago
What is the value of x when -3x + 7x = -12?
Natalka [10]
-3 + 7x = -12

First, simplify -3x + 7x to get 4x. / Your problem should look like: 4x = -12
Second, divide both sides by 4. / Your problem should look like: x = - \frac{12}{4}
Third, simplify \frac{12}{4} to 3. / Your problem should look like: x = -3

Answer: x = -3

4 0
3 years ago
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valentina_108 [34]
-8/5 is the correct answer
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