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Olenka [21]
3 years ago
7

Start 7:10 elapsed end 8:30

Mathematics
1 answer:
Anettt [7]3 years ago
3 0
It has been 1 hour and 20 minutes.

HOW I FOUND MY ANSWER:

7:10 to 8:10 = 1 hour

8:10 to 8:30 = 20 minutes

(1 hour + 20 minutes = 1 hr and 20 min.)

HOPE THIS HELPED
:)
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Given f(x) = 4x^4 find f^-1(x) Then state whether f^-1(x) is a function.
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Step-by-step explanation:

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f(x) is an even function, so f(-x) = f(x). Then the inverse relation is double-valued: for any given y, there can be either of two x-values that will give that result.

___

A function is single-valued. That means any given domain value maps to exactly one range value. The test of this is the "vertical line test." If a vertical line intersects the graph in more than one point, then that x-value maps to more than one y-value.

The horizontal line test is similar. It is used to determine whether a function has an inverse function. If a horizontal line intersects the graph in more than one place, the inverse relation is not a function.

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The attached graph shows the inverse relation (called f₁(x)). It also shows a vertical line intersecting that graph in more than one place.

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