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
Nana76 [90]
3 years ago
15

Evaluate 3x^2-1 when x=2

Mathematics
2 answers:
Artemon [7]3 years ago
6 0
Hey there,

3x^2 - 1 (x = 2)

Plug in 2 for x

3(2)^2 - 1

Do the exponent

3(4) -1

Multiply and the subtract

12 -1 = 11

The answer would be 11

Hope I helped :)

~Char
AlekseyPX3 years ago
3 0
3x^2-1, x=2

3(2)^2-1

3(4)-1

12-1

11

When x=2, 3x^2-1=11.
You might be interested in
Daphne has a preloaded games card that she is using to play games at the arcade as shown in the table.
Lubov Fominskaja [6]

Answer:

she starts with $25

every three games she spends $1.50 (.50 per game)

Step-by-step explanation:

i mean i cant really explain it, its kinda self explanatory

6 0
3 years ago
Hurrrryyyyy plllzzz. Determine the equation of the line that passes through the given points
pashok25 [27]
<h2>Answer:</h2>

y = 2

<h2>Step-by-step explanation:</h2>

To determine the equation of the line that passes through (10,2) and (-3,2), we need to determine the slope of the line. Then substitute the slope and any given point in point slope form to obtain the equation of the line.

<h3>Finding the Slope of the line:</h3>

\implies \text{Slope} = \dfrac{\text{Rise}}{\text{Run}} = \dfrac{y_{2} - y_{1} }{x_{2} - x_{1}  }

\implies \text{Slope} = \dfrac{y_{2} - y_{1} }{x_{2} - x_{1}  }

<u>Substitute the coordinates of the given points:</u>

\implies \text{Slope} = \dfrac{2 - 2}{-3 - 10  }

<u>Simplify the equation to determine the slope:</u>

\implies \text{Slope} = \dfrac{0}{-3 - 10  }

∴ 0 divided by ANY number is ALWAYS 0.

\implies \text{Slope} =0

<h3>Finding the equation of the line:</h3>

Point slope form formula: y - y₁ = m(x - x₁)

  • x₁ and y₁ are the coordinates of any given point.
  • m is the slope

<u>Substitute the values in the point slope form:</u>

\implies \text{Equation of line:} \ y - y_{1}  = m(x - x_{1} )

\implies \text{Equation of line:} \ y - 2  = 0(x - 10)

<u>Simplify the equation to determine the equation of the line:</u>

∴ Any number multiplied by 0 is 0.

\implies \text{Equation of line:} \ y - 2  = 0

\implies \text{Equation of line:} \ y   = 0 + 2

\implies \text{Equation of line:} \ y   = 2

Thus, the equation of the line is y = 2.

5 0
2 years ago
Carl works at a garment factory and sews buttons on shirts. For each shirt he completes that passes inspection, he earns $2. How
Ratling [72]

do 2*52 which gives you 104 so 104 dollars

6 0
3 years ago
2. An aquarium has display tanks that each
Sindrei [870]

Answer:

1050

Step-by-step explanation:

175*6=1050

3 0
3 years ago
Read 2 more answers
How long will it take $5500 to grow to $7400 at an interest rate of 5% it the interest is compounded continuouslyRound the numbe
Thepotemich [5.8K]

Answer:

 5.93 years

Step-by-step explanation:

The continuous compounding formula tells you the amount after t years will be ...

  A = Pe^(rt) . . . . principal P compounded continuously at annual rate r for t years

  7400 = 5500e^(0.05t)

  ln(7400/5500) = 0.05t . . . . divide by 5500, take natural logs

  t = 20×ln(74/55) ≈ 5.93

It will take about 5.93 years for $5500 to grow to $7400.

8 0
3 years ago
Other questions:
  • Can you find the cube root of a negative number? If so, it is positive or negative? Explain your reasoning.
    8·1 answer
  • Which best describes the range of the function f(x) = 2(1/4) after it has been reflected over the y-axis? all real numbers all r
    9·2 answers
  • Mrs.Flores’ rectangular garden has a length of 20 meters and width of 15 meters. Her neighbor, Mr.Sosa, has a similar garden in
    10·1 answer
  • Click
    12·1 answer
  • What is 327.24 rounded to the nearest whole number
    8·2 answers
  • Wolves have good endurance and have been known to travel long distances-up to about 60 miles-in one night.If a wolf trots 18 4/5
    5·1 answer
  • Malia is placing a barrier around the edge of a circular path with a diameter of 13 m. The barriers are in lengths of 2.5 m.
    9·2 answers
  • I WILL GIVE BRAINLIEST
    6·1 answer
  • What is the solution for t in the equation?
    8·1 answer
  • A group of college students is conducting a survey to determine the average age of Walmart shoppers. Should they poll every Walm
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!