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kkurt [141]
3 years ago
8

There are 15 books on a shelf. 9 of these books are new. The rest of them are used. what is the ratio of all books​

Mathematics
1 answer:
Andrew [12]3 years ago
6 0

Answer:

a)15:6 b)2:3

Step-by-step explanation:

No. of used books=15-9=6

a) 15:6

b)

6:9

2:3

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5/6, 1/4, and 2/3 yard. Needs 1 yd of cable
mixer [17]
1. So first of all we have to divide the 3 fractions into decimals to get a decimal to compare. So 5/6 is the same as 5 divided by 6 which is .83 bar and so on...

5/6= .83 bar
1/4= .25
2/3= .66 bar

So 5/6 and 2/3 are closer to one.




2. The two shortest pieces are 2/3 and 1/4 so you se 1/4 + 2/3. Let’s get a common denominator for these fractions. The common denominator is 12. So multiply 1/4 • 3 to get 3/12 and multiply 2/3 by • 4 to get 8/12. Add them together and you get 11/12. So he would need 1/12 more cable or 0.083 bar.


3. Now we have to find a common denominator for all of them. The common denominator is 12 again. Multiply 5/6•2 and then you get 10/12, then add 10/12 +2/12(from 1/4) and then you get leftover with 9/12 or 3/4 more wire.
3 0
3 years ago
14=h/5<br><br> Help me please
ValentinkaMS [17]

Answer:

14=h/5

h=14*5

h=70

<u>Check</u>:

70/5=14

Hope this helps

6 0
3 years ago
What is the value of the discriminant for the quadratic equation -3=-x 2+2x
seraphim [82]
X=3,-1 your answer is right here
3 0
3 years ago
Please help me find x
Ghella [55]

Answer:

x = 53

Step-by-step explanation:

Remember that the sum of all 3 interior angles in a triangle is 180∘ so

74 + x + x = 180

74 + 2x = 180

2x = 180 - 74

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x = 106/2

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3 0
3 years ago
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Could use help with this one! Will give thanks and brainliest to correct answer
cluponka [151]
I believe the answer is A
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3 years ago
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