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Dahasolnce [82]
3 years ago
8

Antonio planned to read 15 books over the summer for the library's summer reading challenge. At the end of July he has read 4/5

of the books. How many books has he read?
Mathematics
1 answer:
gavmur [86]3 years ago
6 0

Answer:

12\ books

Step-by-step explanation:

Number of books=15

He read \frac{4}{5} of the total books.

Books\ he\ read\ at\ the\ end\ of\ July &=\frac{4}{5}\times total\ number\ of\ books\\=\frac{4}{5}\times 15=4\times 3=12

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Please answer quickly
scZoUnD [109]

f(x)=(x+a)/b

or bf(x)=x+a

let f(x)=y

by=x+a

flip x and y

bx=y+a

or y=bx-a

or f^{-1}(x)=bx-a

also g(x) is inverse of f(x)

bx-a=cx-d

so b=c,a=d

again let g(x)=y

y=cx-d

flip x and y

x=cy-d

cy=x+d

y=(x+d)/c

or g^{-1}(x)=(x+d)/c

also f(x) is inverse of g(x)

so (x+a)/b=(x+d)/c

so a=d,b=c

so in either case a=d,b=c

take b=c=1

a=d=2

f(x)=(x+2)/1=x+2

g(x)=1x-2=x-2

so f(x) and g(x) are two parallel lines f(x) with y- intercept=1 and slope 0

g(x) with y-intercept -2 and slope 0

if we take b=c=2,a=d=3

f(x)=(x+3)/2=x/2+3/2

g(x)=2x-3

here f(x) is of slope 1/2 and y-intercept 3/2

g(x) is of slope 2 and y intercept -3

part 3.

f(f(x))=g((x+a)/b)=c[(x+a)/b]-d=(c/b)(x+a)-d

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2 years ago
3x2/15 simplest from
Soloha48 [4]

Answer:

0.4 or 6/15

3×2 is 6

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