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3 years ago

Geometry help?????????????????????

Mathematics

2 answers:

boyakko [2]3 years ago

4 0

I think it is the first one

mr_godi [17]3 years ago

4 0

The answer to that is C ( which is the third one down) DE/AB = DC/AC

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Parallell to : y=5x-4

Sergio039 [100]

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4 Does the answer that’s what I got on my quiz I just took the test

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3 years ago

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Please help!

Gemiola [76]

The derivative of $f(x) = 2\cdot x^{2}-9$ is $f'(x) = 4\cdot x$ .

In this exercise we must apply the definition of derivative, which is described below:

$f'(x) = \lim_{x \to 0} a_n \frac{f(x+h)-f(x)}{h}$ (1)

If we know that $f(x) = 2\cdot x^{2}-9$ , then the derivative of the expression is:

$f'(x) = \lim_{h \to 0} \frac{2\cdot (x+h)^{2}-9-2\cdot x^{2}+9}{h}$

$f'(x) = 2\cdot \lim_{h \to 0} \frac{x^{2}+2\cdot h\cdot x + h^{2}-2\cdot x^{2}}{h}$

$f'(x) = 2\cdot \lim_{h \to 0} 2\cdot x + h$

$f'(x) = 4\cdot x$

The derivative of $f(x) = 2\cdot x^{2}-9$ is $f'(x) = 4\cdot x$ .

We kindly invite to check this question on derivatives: brainly.com/question/23847661

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3 years ago

I don’t understand this please help

zalisa [80]

Answer:

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3 years ago

If 3 times a certain number is increased by 4 the result is 28. What is the number?

Minchanka [31]

3x+4=28 because 3 times an unknown number was mentioned first and mentioned together so they will be together, increased by 4 is +4 and comes after, the result of is the same as equals so you put the equals sign and whatever number they gave after.

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insens350 [35]

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