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Alex73 [517]
3 years ago
8

Can anyone help me please

Mathematics
1 answer:
natita [175]3 years ago
8 0

To find f^{-1} (x), you can switch the x and the y(which is f(x)).

So instead of f(x)=\frac{-7}{4x-5}, it will be:

x = \frac{-7}{4y-5}

Now you need to find "y".

You first multiply (4y - 5) on both sides

x(4y - 5) = -7

Next divide "x" on both sides

4y - 5 = \frac{-7}{x}

Add 5 on both sides

4y = \frac{-7}{x} +5

Divide 4 on both sides to get "y" by itself

y = \frac{7}{4x} +\frac{5}{4}


f^{-1} = \frac{7}{4x} +\frac{5 }{4}

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Answer:

-6 7/hr= -6F per hour

Step-by-step explanation:

a rate of change can be defined as:

R=(total change in some quantity) (time in which the change happened)

In this case we know that the temperature dropped -30F in a given time, then we already know that:

Total change in some quanity =-30F now we know that this change took place between the 1:00pm and the 7:00 pm the total amount of ime between these two hours is:

T= (7.00 - 1.00 hr)= 6.00 hr

this means that the change happened =6 hours.

then we can replace these values in the above equation to get:

R=(-30F)/(6hr)=-6F/hr

this means that for each hours that passes the temperature decreases 6F

we also can write that this rate as:

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What is m∠DFE?<br><br> A. 78<br><br> B. 42<br><br> C. 19<br><br> D. 119
timofeeve [1]
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---------------------------------------

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Step-by-step explanation:

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