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Alex17521 [72]
3 years ago
13

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

D.

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 &amp; 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

Let the common factor between them be 'x'.

So we can say that;

2x+3x=2950\\\\5x = 2950

Dividing both side by 5 we get;

\frac{5x}{5}=\frac{2950}{5}\\\\x = 590

So we can say that;

Stephen share would be = 2x =2\times 590 = \£1180

Now Given:

Stephen then shares his part between himself, his wife & their son in the ratio 3 : 5 : 2.

Let the common factor between them be 'y'.

So we can say that;

3y+5y+2y=1180\\\\10y=1180

Dividing both side by 10 we get;

\frac{10y}{10}=\frac{1180}{10}\\\\y=118

So Stephen's wife share = 5y = 5\times 118= \£590

And Stephen's son share = 2y=2\times118 =\£236

Now we need to find how much more her wife got then her son.

To find how much more her wife got than her son we will subtract Stephen's son share from Stephen's wife share.

framing in equation form we get;

Amount more her wife got than her son = 590-236 = \£354

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

3 0
3 years ago
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