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3 years ago

Which is a function?

Mathematics

2 answers:

tia_tia [17]3 years ago

6 0

<span>a function is a relation between a set of inputs and a particular set of permissible outputs with the property that each input is corresponds to exactly one output. the answer a

</span>

ryzh [129]3 years ago

4 0

B is the correct answer.

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To find the equation of a line, we need the slope of the line and a point on the line. Since we are requested to find the equati

murzikaleks [220]

Answer:

$x-4y+4=0$

$f(x)=\sqrt x$ and x=4

Step-by-step explanation:

We are given that a curve

$y=\sqrt x$

We have to find the equation of tangent at point (4,2) on the given curve.

Let y=f(x)

Differentiate w.r.t x

$f'(x)=\frac{dy}{dx}=\frac{1}{2\sqrt x}$

By using the formula $\frac{d(\sqrt x)}{dx}=\frac{1}{2\sqrt x}$

Substitute x=4

Slope of tangent

$m=f'(x)=\frac{1}{2\sqrt 4}=\frac{1}{2\times 2}=\frac{1}{4}$

In given question

$m=\lim_{x\rightarrow a}\frac{f(x)-f(a)}{x-a}$

$\frac{1}{4}=\lim_{x\rightarrow 4}\frac{f(x)-f(4)}{x-4}$

By comparing we get a=4

Point-slope form

$y-y_1=m(x-x_1)$

Using the formula

The equation of tangent at point (4,2)

$y-2=\frac{1}{4}(x-4)$

$4y-8=x-4$

$x-4y-4+8=0$

$x-4y+4=0$

8 0

3 years ago

Which of the following numbers is closest to the product of 48.9x21.2

Marina CMI [18]

The answer is C because 48.9 multiplied by 21.2 is 1036.68

3 0

3 years ago

A car was traveling 86 kilometers per hour.

ki77a [65]

Its easy to convert 86 kilometers per hour to meters per second :

Just divide the speed which is 86 by 3.6

86 divide 3.6 = 24 m/s or meter per second

8 0

3 years ago

Solve x <br><br> 4x-5 /5 = 3

cluponka [151]

Answer:

x = 1

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4x−

4x+−1=3

4x−1=3

Step 2: Add 1 to both sides.

4x−1+1=3+1

4x=4

Step 3: Divide both sides by 4.

x=1

6 0

3 years ago

Please help me solve this

Genrish500 [490]

Answer:

Solve what?

Step-by-step explanation:

You didn't put the question.

6 0

2 years ago