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Nonamiya [84]
3 years ago
9

Given f(x) = 2x2+3 fins f(-3)

Mathematics
1 answer:
artcher [175]3 years ago
6 0

I'm assuming that you are given the equation f(x) = 2x^2 + 3 and the value f(-3).

To find this, all you need to do is plug in the value of -3 in f(x) for all x values. It would look like:

f(x) = 2(-3)^{2}  + 3

All you need to do is simplify:

f(x) = 2(9) + 3

f(x) = 18 + 3

f(x) = 21

Your final answer is f(x) = 21.

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Write an equation of the line that is perpendicular to the line y = 2x + 8, and which goes through the point (2,12)
harina [27]

Answer:

y=-1/2 x +13

Step-by-step explanation:

negative reciprocal of 2 is -.5 and then find what y intercept it would be to go through that point

3 0
4 years ago
What is the solution of log3x −725 = 2?<br><br> x = −2<br><br> x = 2<br><br> x = 3<br><br> x = 4
SpyIntel [72]
The best and most correct answer provided from your question about the solution of a logarithmic equation is the fourth option which is x = 4. The solution to the equation is as follows:

We can transform the expression to:

(3x-7)^2 = 25

Solving for x using your algebra:

x = 4

I hope it has come to your help.


4 0
3 years ago
In the parallelogram above, BE= 7x-12, CE=10x-5, and DE= 3x+4. What is the length of BD​
kompoz [17]

ABCD is a parallelogram ⇒ BE = DE

So: 7x - 12 = 3x + 4

⇔ 7x - 3x = 4 + 12

⇔ 4x = 16

⇔ x = 16/4 = 4

⇒ BE = 7(4) - 12 = 28 - 12 = 16

⇒ DE = 3(4) + 4 = 12 + 4 = 16

⇒ BD = BE + DE = 16 + 16 = 32

Answer: BD = 32

Ok done. Thank to me :>

3 0
2 years ago
Find the derivative of the algebraic functions
jek_recluse [69]

Answer:

10) f'(x) = (x² + 6x - 3)/(x + 3)²

11) g'(x) = 1 - csc²x

Step-by-step explanation:

10. f(x) = x(1 - (4/(x + 3))

Expanding gives;

f(x) = x - (4x/(x + 3))

Differentiating gives;

f'(x) = 1 - 4/(x + 3) + 4x/(x + 3)²

Simplifying this gives;

f'(x) = [(x + 3)² - 4(x + 3) + 4x]/(x + 3)²

f'(x) = (x² + 6x + 9 - 4x - 12 + 4x)/(x + 3)²

f'(x) = (x² + 6x - 3)/(x + 3)²

11. g(x) = x + cot x

Rewriting this gives;

g(x) = x + (1/tan x)

We know that derivative of tan x is sec x while derivative of (1/tan x) is -csc²x

Thus;

g'(x) = 1 - csc²x

This can be written as

Differentiating this gives;

g'(x) = 1 - csc²x

5 0
3 years ago
HELP ME ASAP PLEASE!!!!!
IceJOKER [234]

Answer:

  see attached

Step-by-step explanation:

That things are the same when they're both the same as something else is the "transitive property." It applies to many things, from interchangeable parts to math expressions to geometrical objects, as here.

When there are 3 given statements, and two of them are shown as such, it isn't hard to determine what the third one is.

The remaining blanks can be filled by the process of elimination.

6 0
3 years ago
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