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belka [17]
3 years ago
13

Two pipes can fill a tank in 98 98 minutes if both are turned on. If only one is used, it would take 29 29 minutes longer for th

e smaller pipe to fill the tank than the larger pipe. How long will it take for the smaller pipe to fill the tank?
Mathematics
1 answer:
Pavel [41]3 years ago
5 0

Answer:

63.5minutes

Step-by-step explanation:

Let the time it takes the small pipe to fill the tank be x

Let the time it takes the larger pipe to fill the tank be y

If the two pipes can fill a tank in 98 minutes if both are turned on then:

x+y = 98...1

If only one is used and it takes 29 minutes longer for the smaller pipe to fill the tank than the larger pipe

x = 29+y... 2

Substituting equation 2 into 1 to get y we have:

29+y+y = 98

29+2y = 98

2y = 98-29

2y = 69

y = 69/2

y = 34.5minutes

x = 29+34.5

x = 63.5

This means it will take the smaller pipe 63.5minutes to fill the tank

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Find the inverse of each function. Is the inverse a function? y=(x+4)³-1
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Inverse of the give function F(x) = ( x + 4 )³ - 1 is F⁻¹(x) = [√( x + 1 ) ] - 4.

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These question can be solved by following 4 easy steps

Step 1 : Switch the F(x) with the variable y

This implies, F(x) = ( x + 4 )³ - 1 becomes y = ( x + 4 )³ - 1

Step 2 : Interchange the variable x and y in the above obtained equation

This implies, from the equation y = ( x + 4 )³ - 1, we get

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Step 3 : Solve the new obtained equation for y

This implies, we have to simplify the equation by rearranging the terms to get the equation in terms of the variable x.

x = ( y + 4 )³ - 1

=> x + 1 = ( y + 4 )³

=>  (y + 4 )³ = x + 1

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=> y = √( x + 1 ) - 4

Hence we obtain the required equation.

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This implies, y = √( x + 1 ) - 4 becomes F⁻¹(x) = √( x + 1 ) - 4

Therefore, we get the inverse of the give function F(x) = ( x + 4 )³ - 1 as F⁻¹(x) = [√( x + 1 ) ] - 4.

Learn more about Inverse of a Function here:

brainly.com/question/2541698?referrer=searchResults

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Plug in -3 into one of the equations.
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