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dlinn [17]
3 years ago
5

A library checks out four fiction books and two non fiction books an hour.How many times more fictions books do they check out t

han non fiction books?
Mathematics
1 answer:
astraxan [27]3 years ago
8 0

Answer: 2

Step-by-step explanation:

All you need to do is subtract

4-2=2

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What is the equation of the inverse function A(n)=3n-20
Allisa [31]

Answer:

A^{-1}(n)=\frac{1}{3}n+\frac{20}{3}

Step-by-step explanation:

First, let's change those variables to x and y, just for the sake of convenience.  In order to find the inverse of a function algebraically, switch the x and y coordinates, then solve for the new y.  Letting y = A(n) and x = n (we will switch them back when we're done):

y = 3x - 20.  This is linear; a line with a slope of 3 and a y-intercept of -20.  When we switch the x and the y, we get:

x = 3y - 20.  Now we solve for the new y.  Begin by adding 20 to both sides:

x + 20 = 3y.  Now divide both sides by 3:

\frac{x+20}{3}=y, or to write it in slope-intercept form, like the function you started with:

y=\frac{1}{3}x+\frac{20}{3}

This is also a line, with a slope of 1/3 and a y-intercept of +20/3

Now, replacing:

A^{-1}(n)=\frac{1}{3}n+\frac{20}{3}

That is how to write the inverse using function notation.  The little -1 as an exponent tells us that this is the inverse of the function A(n).

5 0
3 years ago
4.257 inches rounded to the tenth is
m_a_m_a [10]
60.187
this is the answer it just wont let me tell you if I don't have 20 characters.                  
5 0
3 years ago
Read 2 more answers
Whats 95 closer to 64 or 125
Basile [38]
125-95=30
95-64=31
so it would be 125
6 0
3 years ago
Find the number that makes the ratio equivalent to 2:3.<br> 24: BLANK
Vitek1552 [10]

Answer:

equivalent ratio for this question is

4:6:48

5 0
2 years ago
Read 2 more answers
PLS HELP <br> If r = 3s + 1 and t = s - 4, what is r in terms of t?
kirill [66]
R = 3(t+4) + 1
Hope it helps
7 0
3 years ago
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