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Nata [24]
4 years ago
9

If f(x)=x^2-1, what is the equation for f^-1(x)

Mathematics
1 answer:
Alekssandra [29.7K]4 years ago
8 0
Let y = x^2 - 1
x^2 = y + 1

x = sqrt(y + 1)

so f^-1(x)  = sqrt (x + 1)  (answer)
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If two lines have different slopes, they cannot have an infinite number of solutions.
Anuta_ua [19.1K]
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3 0
3 years ago
a stereo is marked down $75. If this is a 15% decrease find the sale price. How do you work this problem out?
m_a_m_a [10]
You can do a proportion: 75/15 = x/100
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8 0
4 years ago
Read 2 more answers
1500(0.04)(3)=1500(0.04)(3)=
san4es73 [151]
1500(0.04) = 60
60*3 or 60(3) = 180
Both equations are the same. I don't actually fully understand why you would use the same equation after the equal sign
4 0
3 years ago
Algebra is very hard espc without teacher help - solve for x
ehidna [41]

Answer:

In explanation

Step-by-step explanation:

First, we simplify the parentheses:

(12x+16)-7x=(10x-20)+6

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30=5x

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<em>Hope this helped! Have a good day.</em>

4 0
3 years ago
ASAP<br> How to do<br> With steps<br> Thx
iris [78.8K]

Answer:

A = 101 degrees

Step-by-step explanation:

ok so a traingle has a full degree of 180, and on here we have degress C and B but need to know A

all we have to do is add 24 and 55 which is 79 and then substarct 79 from 180 to know how much is A's degree....which is... 101 degrees YAY!

to make sure u add them all up :  24 + 55 + 101 = 180

~batmans wife dun dun dun.....

6 0
4 years ago
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