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ExtremeBDS [4]
3 years ago
14

Which equation is the inverse of y = 9x2 – 4? mc008-1.jpg mc008-2.jpg mc008-3.jpg mc008-4.jpg

Mathematics
2 answers:
murzikaleks [220]3 years ago
8 0
Answer: y = +/- [√x+4) ] / 3

Explanation:

1) To find the inverse of the function y = 9x^2 - 4, exhange the variables x and y, and then solve for the new y.

2) Exchange of the variables: y = 9x^2 - 4 → x = 9y^2 - 4

3) Solve for y:

9y^2 = x + 4

y^2 = [x + 4] / 9

y = +/- [ √ (x + 4) ] / 3

Delicious77 [7]3 years ago
3 0
Y = 9x^2 - 4

x^2 = (y + 4) / 9

x  = sqrt(y+4) / 3

f(-1x) = [sqrt(x + 4)] / 3

the answer is y=[sqrt(x + 4)] / 3
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Two angles are supplementary if their sum is​ 180°. the larger angle measures five degrees more than four times the measure of a
wlad13 [49]
Let x represent the smaller angle.
Let y represent the larger angle.

The problem states that the larger angle measures five degrees more than four times the measure of the smaller angle.
With this given information, we can create the following equation.

y=4x+5

Also, they a supplementary, meaning that they add up to 180. We can create another equation.

x+y=180

Since we have two linear equations and we want to find the solution, we have a system of linear equations. Let's solve this system by using the substitution method.

Substitute y=4x+5 into x+y=180

x+y=180

After substituting, you get

x+4x+5=180

Now, combine the x's

5x+5=180

Subtract both sides by 5

5x=175

Divide both sides by 5.

x=35

Now, we can solve for y using the equation x+y=180 since we know the value of x.

35+y=180

Subtract both sides by 35.

y=145

The smaller angle has a measure of 35 degrees and the larger one has a measure of 145 degrees. Have an awesome day! :)
5 0
3 years ago
Solve the equation x2 = 10.
MatroZZZ [7]

Answer:

\large\boxed{x=-\sqrt{10}\ or\ x=\sqrt{10}}

Step-by-step explanation:

x^2=10\iff x=\pm\sqrt{10}

8 0
3 years ago
How do I simplify negative square root of 72
Irina18 [472]
Solve for positive 72 and separate the negative part as \sqrt{-1} The rest of calculation is same..
5 0
3 years ago
Find AB. i’m literally so dumb i don’t know math
Hatshy [7]

Step-by-step explanation:

AC = AB + BC

25x - 19 = 9x + 7 + 5x + 7

25x - 19 = 14x + 14

25x - 14x = 14 + 19

11x = 33

x = 33/11

x = 3

AB = 9x + 7

= 9(3) + 7

= 27 + 7

= 34

4 0
3 years ago
Read 2 more answers
Evaluate the variable expression x + y for the given values of x and y . X=43.37 ; Y=18.24
cupoosta [38]

Answer:

61.61

Step-by-step explanation:

In the expression now that we know the value of x and y, we can replace it with its values. So it would look like this.... 43.37 + 18.24. This equals 61.61.

Hope this helps!

4 0
2 years ago
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