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3 years ago

What is this?Khan Academy

Mathematics

2 answers:

Lyrx [107]3 years ago

7 0

Y = 3/2x - 4.5
—————————————

Semenov [28]3 years ago

5 0

Answer:

Step-by-step explanation:

Slope: Down 3, Over 3

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Daredevil Danny was cliff jumping . He jumped off a cliff that was 14.2 meters above the surface . He jumped 2.3 meters below wa

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Step-by-step explanation:

i don't know just stating the obvious.

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3 years ago

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1)There are whole numbers that are not integers.

tiny-mole [99]

Answer:

1).false 2). false 3).true 4). true

Step-by-step explanation:

1).All whole numbers are integers, so s...” That's right! All whole numbers are integers, so since 0 is a whole number, 0 is also an integer.

3).. Integers include all whole numbers and their negative counter part e.g. … -4, -3, -2, -1, 0,1, 2, 3, 4,… Where a and b are both integers. is a rational number but not an integer. 4). All integers are rational number. Since we can rewrite an integer into a fractional form by diving it by 1. For example, 4=41 4 = 4 1 . But not all rational numbers are integer.

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3 years ago

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1. Deshawn's Bikes rents bikes for $11 plus $5 per hour, Maria paid SSI to rent a bike. For how

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3 years ago

How derivative of this absolute value function is like this!

Daniel [21]

Recall the definition of absolute value.

$|x| = \begin{cases} x & \text{if } x \ge 0 \\ -x & \text{if } x < 0 \end{cases}$

When $x$ ,

$|x| = x \implies \dfrac{d|x|}{dx} = 1$

When $x$ ,

$|x| = -x \implies \dfrac{d|x|}{dx} = -1$

The derivative does not exist at $x=0$ , since the one-sided limits

$\displaystyle \lim_{x\to0^-} f'(x) = -1$

and

$\displaystyle \lim_{x\to0^+} f'(x) = +1$

do not match.

So the derivative of $|x|$ is

$\dfrac{d|x|}{dx} = \begin{cases} 1 & \text{if } x > 0 \\ -1 & \text{if } x < 0 \\ \text{undefined} & \text{if } x = 0\end{cases}$

Now we can write this as

$\dfrac{d|x|}{dx} = \dfrac x{|x|} = \dfrac{|x|}x$

since

$x > 0 \implies |x| = x \implies \dfrac{|x|}x = \dfrac xx = 1$

and

$x < 0 \implies |x| = -x \implies \dfrac{|x|}x = -\dfrac xx = -1$

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2 years ago

f(x)=1x−2+4 and g(x)=1x+3+6 . Select from the drop-down menus to correctly complete the statement. You can get the graph of func

liubo4ka [24]

<em>You can get the graph of function g by taking the graph of function f and shifting it 7 units to the left, and by shifting it 7 units up.</em>

<h2>Explanation:</h2>

We have the following functions:

$f(x)=1x-2+4 \\ \\ g(x)=1x+3+6$