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Gala2k [10]
4 years ago
11

Which equation can be simplified to find the inverse of y = x2 – 7? x = y squared minus one-seventh StartFraction 1 Over x EndFr

action = y squared minus 7 x = y2 – 7 –x = y2 – 7
Mathematics
2 answers:
tresset_1 [31]4 years ago
5 0

Answer:

  x = y^2 – 7

Step-by-step explanation:

The first step in finding the inverse of y = f(x) can be to write the equation x = f(y). The equation shown above is such an equation.

777dan777 [17]4 years ago
3 0

Answer:

x= y^2-7

Step-by-step explanation:

We have been given an equation y=x^2-7. We are asked to determine that which equation can be simplified to find the inverse of our given equation.

We know that to find inverse of an equation, the x and y-values are interchanged.

Let us interchange x and y values for our given equation.

x= y^2-7

Therefore, the equation x= y^2-7 can be simplified to find the inverse of our given equation.

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I need help. line wx is parallel to line yz
Oksana_A [137]

Answer:

45

Step-by-step explanation:

<ABY=<ZBY(VERTICAL ANGLES)

SO.

3x-5=2x+40

3x-2x=40+5

x=45

3 0
3 years ago
Read 2 more answers
A page should have perimeter of 42 inches. The printing area within the page
Tamiku [17]

Overall  dimensions of the page in order to maximize the printing area is  page should be 11 inches wide and 10 inches long .

<u>Step-by-step explanation:</u>

We have , A page should have perimeter of 42 inches. The printing area within the page  would be determined by top and bottom margins of 1 inch from each side, and the  left and right margins of 1.5 inches from each side. let's assume  width of the page be x inches  and its length be y inches So,

Perimeter = 42 inches

⇒ 2(x+y) = 42\\x+y = 21\\y = 21-x

width of printed area = x-3  & length of printed area = y-2:

area = length(width)

area = (x-3)(y-2)\\area = (x-3)(21-x-2)\\area = (x-3)(19-x)\\area = -x^{2} + 22x -57

Let's find \frac{d(area)}{dx}:

\frac{d(area)}{dx} = \frac{d(-x^{2}+22x-57)}{dx} = -2x +22 , for area to be maximum \frac{d(area)}{dx}= 0

⇒ -2x+22 = 0\\2x =22\\x=11 inches

And ,

y = 21-x\\y = 21-11\\y = 10 inches

∴ Overall  dimensions of the page in order to maximize the printing area is  page should be 11 inches wide and 10 inches long .

7 0
3 years ago
What values of x and y satisfy the system of equations shown below?
Oduvanchick [21]

Answer:

the correct values are ( 3, -2)

7 0
3 years ago
Read 2 more answers
Calculate the value <br><br>X + 20<br>3x + 10<br>5x +10°​
Serga [27]

Answer:

x + 20°​ = 35.56​​°

3x + 10​​° = 56.68°

5x + 10​° = 87.8°

Step-by-step explanation:

Assume;

Given measures are angle of a triangle

x + 20°​

3x + 10​°​

5x + 10​°

Find:

Value of each angle

Computation:

We know that, sum of all interior angle in a triangle is 180°​

So,

We say that

x + 20°​  + 3x + 10​°​  + 5x + 10°​ = 180°

9x + 40° = 180°

9x = 140°

x = 15.56°

So,

x + 20°​ = 15.56 + 20 = 35.56​​°

3x + 10​​° = 3(15.56) + 10 = 56.68°

5x + 10​° = 5(15.56) + 10 = 87.8°

6 0
3 years ago
3. Look at the figure below. (note that the figure is not drawn to scale).
blagie [28]
It d and Zazc I hope this helps
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3 years ago
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