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Alina [70]
3 years ago
8

Identify the errors made in the finding the inverse of y= x^2 +12x

Mathematics
1 answer:
alex41 [277]3 years ago
5 0

9514 1404 393

Answer:

  y was not substituted for every x

Step-by-step explanation:

To find the inverse of ...

  y = f(x)

you need to solve ...

  x = f(y)

Here, f(x) = x^2 +12x, so f(y) = y^2 +12y

This is not the expression we see on the right of ...

  x = y^2 +12x

Apparently y was not properly substituted into f(x).

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Four friends go to an amusement arcade.
galben [10]

<u><em>Answer:</em></u>

<u>The rule is: </u>

T(x) = 8x + 20

<em><u>Explanation:</u></em>

<u>We are given that:</u>

<u>The rule for the amount that one friend pays is:</u>

C(x) = 2x + 5

<u>Now, we know that:</u>

Each of the four friends will pay the entry fee which is $5 per person

The 4 friends will play the same number of games represented by x

<u>This means that:</u>

We can simply get the rule for the total amount to be paid by the four friends (T(x)) by multiplying the amount paid by each friend by 4

<u>This means that:</u>

T(x) = 4 * C(x)

T(x) = 4(2x + 5)

T(x) = 8x + 20

Hope this helps :)

4 0
3 years ago
How does the function f(x) = a ln x compare to the parent function when |a| &gt; 1?
VladimirAG [237]

Answer: The graph is stretched.

Step-by-step explanation:

5 0
3 years ago
HELP!! 30 POINTS AND WILL MARK BRAINLIEST One month, Henry's grandfather gives him a box of 523 baseball cards. Each month, star
Bezzdna [24]

Answer:

nth term =  523 + 24(n - 1

Step-by-step explanation:

This is modelled by an arithmetic series where first term a1 = 523 and common difference d = 24.

nth term = a1 + d(n - 1).

Here it is  523 + 24(n - 1)   (answer)

4 0
3 years ago
Read 2 more answers
Which expression is equivalent to –0.25x + 1.5 – 0.5x - 2?
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The answer to that is D
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An online ticket seller charges $44 for each ticket to a concert, plus a fixed handling fee of $12. Define the unknown variables
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The unknown variables are how many tickets are being bought and the total.


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3 years ago
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