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kirill [66]
3 years ago
10

Tim has a large collection of books. The number of paperback books he own is 3 times less than 4 times the amount of hardcover b

ooks. In total, Tim has 447 books. How many hardcover books does Tim have?
Mathematics
2 answers:
SSSSS [86.1K]3 years ago
7 0

Answer:

Tim has 90 hardcover books

lbvjy [14]3 years ago
5 0

13

Step-by-step explanation:

because if you multiply 3 times 2. to get 5 then multiply 5 and 4 to get 20 then 447 divided by 20 to get 13

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it's 60 degree in my thinking

Step-by-step explanation:

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The number of stamps that kaye and alberto had were in the ratio 5 : 3, respectively. after kaye gave alberto 10 of her stamps,
Gala2k [10]
K:A
5:3 (before)
15:9

since the total number of stamps didn't change, the total ratio should be the same.

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4 0
3 years ago
Please help with this arc equation.
boyakko [2]

Answer:

Part 1) arc\ AB=49^o

Part 2) arc\ ABC=204^o

Part 3) arc\ BAC=156^o

Part 4) arc\ ACB=311^o

Step-by-step explanation:

Part 1) Find the measure of arc AB

we know that

arc\ AB=m\angle AOB ----> by central angle

we have

m\angle AOB=49^o

therefore

arc\ AB=49^o

Part 2) Find the measure of arc ABC

we know that

The central angle of complete circle is equal to 360 degrees

so

arc\ ABC=360^o-107^o-49^o=204^o

Part 3) Find the measure of arc BAC

we know that

arc\ BAC=arc\ BA+arc\ AC ----> by angle addition postulate

we have

arc\ BA=49^o ---> by central angle

arc\ AC=107^o ---> by central angle

so

arc\ BAC=49^o+107^o=156^o

Part 4) Find the measure of arc ACB

we know that

The central angle of complete circle is equal to 360 degrees

so

arc\ ACB=360^o-arc\ AB

substitute

arc\ ACB=360^o-49^o=311^o

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3 years ago
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Gekata [30.6K]

Answer:

C, D

Step-by-step explanation:

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