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3 years ago

Consider the function f(x)=8-3x^2. Find the value of f(x) when x=3 and select the correct answer below.

Mathematics

2 answers:

Hatshy [7]3 years ago

4 0

F(3) = 8 - 3(3)^2
f(3) = 8 - 3(9)
f(3) = 8 - 27
f(3) = -19

masya89 [10]3 years ago

3 0

Yoooo the answer is A, -19. hope this helps, have an amazing day :)

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Answer:

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Step-by-step explanation:

Given:

Cylindrical Shape Pipe having

Height = 18 ft

Diameter = 4 ft

∴ $Radius =\frac{Diameter}{2}=\frac{4}{2}=2\ ft$

To Find:

Volume of Pipe = ?

Solution:

Formula for Volume of Cylinder is given by

$\textrm{Volume of Cylinder}=\pi (Radius)^{2} \times Height$

Substituting the given values we get

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2 years ago

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1 year ago

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2 years ago

Mr. Mole left his burrow and started digging his way down at a constant rate. Time (minutes) Altitude (meters) 666 -20.4−20.4min

Juli2301 [7.4K]

Answer:

$-6$ meters.

Step-by-step explanation:

We have been given Mr. Mole left his burrow and started digging his way down at a constant rate.

We are also given a table of data as:

Time (minutes) Altitude (meters)

6 -20.4

9 -27.6

12 -34.8

First of all, we will find Mr. Mole's digging rate using slope formula and given information as:

$m=\frac{y_2-y_1}{x_2-x_1}$ , where,

$y_2-y_1$ represents difference of two y-coordinates,

$x_2-x_1$ represents difference of two corresponding x-coordinates of y-coordinates.

Let $(6,-20.4)$ be $(x_1,y_1)$ and $(9,-27.6)$ be $(x_2,y_2)$ .

$m=\frac{-27.6-(-20.4)}{9-6}$

$m=\frac{-27.6+20.4}{3}$

$m=\frac{-7.2}{3}$

$m=-2.4$

Now, we will use slope-intercept form of equation to find altitude of Mr. Mole's burrow.

$y=mx+b$ , where,

m = Slope,

b = The initial value or the y-intercept.

Upon substituting $m=-2.4$ and coordinates of point $(6,-20.4)$ , we will get:

$-20.4=-2.4(6)+b$

$-20.4=-14.4+b$

$-20.4+14.4=-14.4+14.4+b$

$-6=b$

Since in our given case y-intercept represents the altitude of Mr. Mole's burrow, therefore, the altitude of Mr. Mole's burrow is $-6$ meters.

6 0

2 years ago

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