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3 years ago

Hey can you please help me posted picture of question

Mathematics

1 answer:

amm18123 years ago

5 0

The inverse of the inverse function will give us back the original function.

So the inverse of the inverse function x² -2 will be √(x+2), which i s thus our original function.

So, the answer to this question is option A.

A way to validate the answer is take the composition of the original function and its inverse, the will give the result equal to x

You might be interested in

Which is f(5) for the function â€""2x2 2x â€"" 3? â€""107 â€""63 â€""43 â€""37.

artcher [175]

<h3>Answer:</h3>

Option B: 63

<h2>Given that:</h2>

The given function is $f(x)=2x^2+2x+3$

<h2>Explanation:</h2>

To evaluate the value of a function at given value of input, you should replace the variable given in the function with the value of input that is given, in your case it is x = 5.

For x = 5, we have

$f(5) = 50 + 10 + 3 = 63$

Similarly, you will be able to evaluate the value of the function for any other input given, which is assumed to be valid.

Hence option b: 63 is the correct option.

For more information, refer to the link given below:

brainly.com/question/532781

8 0

2 years ago

If 20 is 40% of a value, what is that value?

GuDViN [60]

20------40%

x-----100%

x=(20*100)/40

x=2000/40

x=50

3 0

3 years ago

Read 2 more answers

What is the equation of the circle with center (-6,7) that passes through the point (4,-2). A. (x+6)^2+(y-7)^2=181 B. (x-6)^2+(y

pychu [463]

The equation of a cricle passing through (h,h) and with radius r is
$(x-h)^2+(y-k)^2=r^2$
so

cente ris (-6,7) and passing through (4,-2)
$(x-(-6))^2+(y-7)^2=r^2$
$(x+6)^2+(y-7)^2=r^2$
subsitute (4,-2) to find r^2

$(4+6)^2+(-2-7)^2=r^2$
$(10)^2+(-9)^2=r^2$
$100+81=r^2$
$181=r^2$

so it is

$(x+6)^2+(y-7)^2=181$
A is the answer

3 0

3 years ago

In triangle abc, the perimeter is 36, and ab=ac. line ad is perpendicular to bc at the point d, and triangle abd's perimeter is

Musya8 [376]

Let x=ab=ac, and y=bc, and z=ad.

Since the perimeter of the triangle abc is 36, you have:

Perimeter of abc = 36
ab + ac + bc = 36
x + x + y = 36
(eq. 1) 2x + y = 36

The triangle is isosceles (it has two sides with equal length: ab and ac). The line perpendicular to the third side (bc) from the opposite vertex (a), divides that third side into two equal halves: the point d is the middle point of bc. This is a property of isosceles triangles, which is easily shown by similarity.

Hence, we have that bd = dc = bc/2 = y/2 (remember we called bc = y).

The perimeter of the triangle abd is 30:

Permiter of abd = 30
ab + bd + ad = 30
x + y/2 + z =30
(eq. 2) 2x + y + 2z = 60

So, we have two equations on x, y and z:

(eq.1) 2x + y = 36
(eq.2) 2x + y + 2z = 60

Substitute 2x + y by 36 from (eq.1) in (eq.2):

(eq.2') 36 + 2z = 60

And solve for z:

36 + 2z = 60 => 2z = 60 - 36 => 2z = 24 => z = 12

The measure of ad is 12.

If you prefer a less algebraic reasoning:

- The perimeter of abd is half the perimeter of abc plus the length of ad (since you have "cut" the triangle abc in two halves to obtain the triangle abd).

- Then, ad is the difference between the perimeter of abd and half the perimeter of abc:

ad = 30 - (36/2) = 30 - 18 = 12

4 0

3 years ago

Read 2 more answers

Stephen & Richard share a lottery win of £2950 in the ratio 2 : 3. Stephen then shares his part between himself, his wife &a

horsena [70]

Answer:

Stephen's wife got £354 more than his son.

Step-by-step explanation:

Given:

Amount of Lottery = £2950

Now Given:

Stephen & Richard share a lottery amount in the ratio 2 : 3