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3 years ago

5

If f(x) = 2x2 + 1, what is f(x) when x = 3?

2 answers:

ikadub [295]3 years ago

8 0

$f(x)=2x^2+1\\\\\text{substitute the value of x to the equation of the function}\\\\f(3)=2\cdot3^2+1=2\cdot9+1=18+1=19$

Ghella [55]3 years ago

6 0

Answer:

The answer is 19

Step-by-step explanation:

You solve it like an regular equation

HOPE THIS HELPS

STAY SAFE:)

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2 years ago

Help me please and thank you

sdas [7]

Answer:

Based on the model, the length of the wall is $\frac{9}{8}$ ft, the width of the wall is $\frac{1}{2}$ ft, and the height of the wall is $\frac{11}{8}$ ft. The volume of the portion of security wall that Tim has constructed so far is $\frac{99}{128}$ cu ft.

Step-by-step explanation:

Given:

The figure constructed shows a rectangular prism made up of small wooden cubes of length $\frac{1}{8}\ ft$ .

Width of the prism = $\frac{1}{2}\ ft$ .

To find length , height and volume of the figure.

Solution:

From the figure we can conclude that :

Length side of the prism counts 9 cubes.

Thus, length of the prism will be given as :

⇒ $\textrm{Length of each cube}\times \textrm{Number of cubes}$

⇒ $\frac{1}{8}\ ft\times 9$

⇒ $\frac{9}{8}\ ft$ (Answer)

Height side of the prism counts 11 cubes.

Thus, height of the prism will be given as :

⇒ $\textrm{Length of each cube}\times \textrm{Number of cubes}$

⇒ $\frac{1}{8}\ ft\times 11$

⇒ $\frac{11}{8}\ ft$ (Answer)

Volume of the prism can be given as :

⇒ $Length\times width\times height$

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3 years ago

What is the value of<br> 3(1.5 - x) when x = 0.5?

Reika [66]

Answer:

3

Step-by-step explanation:

3 (1.5 - 0.5) = 3 (1) = 3 * 1 = 3. The value of the expression is 3.

Tell me if I'm wrong :)

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2 years ago

Read 2 more answers

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kobusy [5.1K]

Answer:

11,7,13

Step-by-step explanation:

coefficients come before the variable. so if it’s 13r, the variable is r. which makes the coefficient 13

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3 years ago