1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
The price of 41gram apple is 10.25 rupees.then how many rupees for 1 kg apple​
Gekata [30.6K]

Answer:

Rs. 250

Step-by-step explanation:

The price of 41 g. apple is Rs 10.25

The price of 1 g. apple is Rs 10.25/41, = Rs 0.25

The price of 1 Kg (1000 g.) is 0.25 x 1000 = Rs 250

8 0
3 years ago
Write the equation in standard form for the circle with center (0, -1) and radius 10.
BARSIC [14]

Answer:

x^2 + (y+1)^2 = 10^2

Step-by-step explanation:

Centre (p,q) = (0, -1)

radius, r = 10

General Equation of a circle

(x-p)^2 + (y-q)^2 = r^2

(x-0)^2 + (y- -1)^2 = 10^2

x^2 + (y+1)^2 = 10^2

7 0
3 years ago
A rectangular field with perimeter of 80m is to have an area of at least 380m² . Describe the possible lengths and of the field.
Kryger [21]

let \: x \: be \: the \: length \\ let \: y \: be \: the \: width

perimeter = 2x + 2y \\ area = xy

2x + 2y = 80 \\ xy = 380 \\  \\ x + y = 40 \\ xy = 380 \\  \\ x = 40 - y \\ (40 - y)y = 380

40y - y {}^{2}  = 380 \\ y {}^{2}  - 40y + 380 = 0 \\  y {}^{2}  - 40y + 400 = 20 \\ (y - 20) {}^{2}  = 20 \\ y  - 20 =± \sqrt{20}  \\ y_{1}=20-√20≈15.52786\\ y_{2}=20+√20≈24.4721

6 0
2 years ago
Please help me quiz
velikii [3]
Answer would be the bottom answer
5 0
3 years ago
The demand for a certain company's e-reader can be approximated byq =720p− 1 million units per year (60 ≤ p ≤ 400),where p is th
LenKa [72]

Answer:

Equilibrium price P = 200 dollars

equilibrium demand of million e-readers per yer = 2.6 mi/yr

Step-by-step explanation:

Given that;

q = 720/p - 1 million units per year { 60 ≤ p ≤ 400 }

supply q = 0.018p − 1 million units per year (60 ≤ p ≤ 400)

we substitute

720/p - 1  = 0.018p − 1

720/p = 0.018p

720 = 0.018p^2

p^2 = 720/0.018 = 40000

p = sqrt(40000)

p = 200

substitute value of p

q = 0.018(200) − 1

q = 3.6 - 1 = 2.6

Therefore Equilibrium price P = 200 dollars

equilibrium demand of million e-readers per yer = 2.6 mi/yr

8 0
3 years ago
Other questions:
  • What is true about the product, a fraction less than 1 is multiplied by 9/10
    5·2 answers
  • you put $634 into an investment at 6% compounded annually for six years. what will be the balance be at the end of six years?
    7·2 answers
  • 3. Use your knowledge of inverse functions to complete the flowchart. Then explain how
    13·1 answer
  • The step by step and final answer
    11·1 answer
  • Before reporting the results of the survival analysis, the investigators compared baseline characteristics of the 38 people who
    9·1 answer
  • Which speed is the fastest?
    13·2 answers
  • HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP IVE BEEN WORKING ON THIS ALL DAY BRAINLYEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·1 answer
  • What side has the same length as BC?
    6·2 answers
  • A tailor used 6 2/3 yards of fabric to make hats. The amount of fabric needed to make each hat is 5/6 yard. How many complete ha
    14·1 answer
  • Which following relations represent a function
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!