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jekas [21]
3 years ago
5

Find the inverse of the function f(x) =x^2-5. Is the inverse a function?

Mathematics
1 answer:
Mariana [72]3 years ago
8 0
Y=x^2-5, solve for x

y+5=x^2

x=√(y+5) so 

f^-1(x)=√(y+5)
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jamie has taken three math tests. her scores were 85, 90, and 89. to get an average of 90 what must be the sum of all her tests
Zinaida [17]

Answer:

96 marks

Step-by-step explanation:

We know that the mean of a given amount of values is the sum of the values divided by the number of values

Let the marks in the fourth test = x marks

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264 + x = 360

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Therefore, Jamie needs 96 marks in her 4th test to get a mean score of 90

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3 years ago
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3 0
1 year ago
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snow_lady [41]

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