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Luba_88 [7]
3 years ago
5

The answers and work to all please quick

Mathematics
1 answer:
galben [10]3 years ago
3 0
1.) 12s= 60
Divide 12 on both sides
Final Answer: s= 5 

2.) 7y= 42
Divide 7 on both sides
Final Answer: y= 6

3.) x/9=72
Multiply 9 on both sides
Final Answer: x= 648

4.) -5j=30
Divide -5 on both sides
Final Answer: j= -6

5.) n/20=1
Multiply both sides by 20
Final Answer: n= 20

6.) 15=n/5
Multiply 5 on both sides
Final Answer: 75 =n

7.) 100=25u
Divide 25 on both sides
Final Answer: 4 =u

8.) -36= -6p
Divide -6 on both sides
Final Answer: 6 =p

9.) -10=t/13
Multiply 13 on both sides
Final Answer: -103 =t
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Decrease = Rs 800- Rs 640= Rs 160
Percentage decrease = (Decreased amount / Original amount) * 100
= 640/ 800 * 100 = 80%
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3 years ago
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the ratio of oil to vinegar in a certain salad dressing is 8:5. how much oil must be blended with 7 liters of vinegar for that r
tia_tia [17]
To get the answer we can use propotion
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x oil----------------7 vinegar
Crossmultiply now
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4 years ago
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M is -0.7 because -1.4 divided by two gives -0.7
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3 years ago
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4 years ago
Carmine has a total of 9 7/8 gallons of milk in his refrigerator. For breakfast, his nephew Silvio puts 3/4 of the milk into his
Elena L [17]

Answer:

The volume of gallons used by Silvio = 7\frac{13}{32} gallons

Step-by-step explanation:

Total volume of milk = 9\frac{7}{8} = \frac{79}{8}

amount used by Silvio = \frac{3}{4} of total volume

This means that if the total volume of milk were divided into four parts, Silvio takes 3 out of 4 parts, and this is converted to volume as follows:

∴ amount used by Silvio = \frac{3}{4} × \frac{79}{8} = \frac{237}{32} = 7\frac{13}{32} gallons

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