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Anit [1.1K]
2 years ago
11

Which equation is the inverse of y = 9x² - 4?​

Mathematics
1 answer:
Mila [183]2 years ago
4 0

Answer:

y = ± [ √(x+4) ] / 3

Step-by-step explanation:

1) To find the inverse of the function y = 9x2 – 4, exchange 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=> y = ± [ √(x + 4) ] / 9

= > y = ± [ √(x + 4) ] / 3

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A survey was carried out among 120 school children looked at which type of meat they preferred. 55%said they preferred lamb,20%
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No. of children in lamb, chicken, duck, and turkey category is 66, 24, 18 and 12 respectively.

<h3>What is percentage ?</h3>

Percentage is the value per hundredth.

According to the given question a survey was carried out among 120 school children looked at which type of meat they preferred. 55% said they preferred lamb,20% said they preferred chicken, 15% preferred duck and 10% turkey and we have to calculate no. of children in each category.

55% said they preferred lamb, So the no. of students i this category is

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= 18 children.

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= (10/100)×120

= 12 children.

learn more about percentage here :

brainly.com/question/19670755

#SPJ4

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Step-by-step explanation:

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