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2 years ago

If f(x) = x² - 2x, find: f(-3) = [?]

Mathematics

1 answer:

Vika [28.1K]2 years ago

4 0

Answer:

Step-by-step explanation:

f(-3) = (-3)^2 - 2(-3) = 15

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Here's the question, please help!

nata0808 [166]

Answer:

None of these

Step-by-step explanation:

To convert the parametric curve into Cartesian form,
rewrite the equation for $x$ to make $\sin t$ the subject:

$x=2\sin t$

$\implies \sin t=\dfrac{x}{2}$

Substitute this into the given equation for $y$ :

$\begin{aligned}y & =3 \sin t\\\implies y & = 3 \left(\dfrac{x}{2}\right)\\y& = \dfrac{3}{2}x\end{aligned}$

Therefore, the Cartesian form of the parametric curve is:

$y=\dfrac{3}{2}x$

<u>Further Information</u>

<u />

$\dfrac{x^2}{2}+\dfrac{y^2}{3}=1 \quad \textsf{is the equation of a vertical ellipse}$

$\textsf{with center (0, 0), co-vertex }\sf \sqrt{2}, \textsf{ and vertex }\sqrt{3}$

$x^2+y^2=6 \quad \textsf{is the equation of a circle}$

$\textsf{with center (0, 0) and radius }\sf \sqrt{6}$

$3x^2+2y^2=1 \quad \textsf{is the equation of a vertical ellipse}$

$\textsf{with center (0, 0), co-vertex }\sf \dfrac{\sqrt{3}}{3}, \textsf{ and vertex }\dfrac{\sqrt{2}}{2}$

6 0

2 years ago

Read 2 more answers

Write 820.341 in scientific notation

Brut [27]

It is =8.20341 x 10^2

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3 years ago

Nikki M and Cardi B are debating about which set of numbers would best describe the temperature in New York on any given day Nik

kompoz [17]

Cardi B

Step-by-step explanation:

It is decreasing in the time interval 0 < x < 2 hours.

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2 years ago

Show a rectangle that is 1/2 meters long and is 3/10 meters wide

andreev551 [17]

________________
  I I not drawn to scale
3/10 I I
I I
I I
________________I
1/2

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3 years ago

Please help!!!! <br> Show work if possible

Tamiku [17]

Answer:

900°

Step-by-step explanation:

Sum of angles= 180(n-2)

Where n= number of sides of polygon.

$n=7\\Sum \ of \ Angles=180(7-2)\\=900$

5 0

3 years ago