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2 years ago

Help please me with these two questions. Thank you

Mathematics

1 answer:

arlik [135]2 years ago

4 0

9514 1404 393

Answer:

1. 9/20 hours doing math for 1 hour reading

2. 3 1/3 cups water to 1 cup concentrate

Step-by-step explanation:

1. You have done the math. Copy your answer into the blanks that are waiting for it.

9/20 hours on math for 1 hour reading

2. 1 2/3 ÷ 1/2 = 5/3 × 2/1 = 10/3 = 3 1/3

3 1/3 cups of water to 1 cup of juice concentrate

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Beaker A contains 1 liter which is 30 percent oil and the rest is vinegar, thoroughly mixed up. Beaker B contains 2 liters which

alekssr [168]

Answer:

1.25 liters of oil

Step-by-step explanation:

Volume in Beaker A = 1 L

Volume of Oil in Beaker A = 1*0.3 = 0.3 L

Volume of Vinegar in Beaker A = 1*0.7 = 0.7 L

Volume in Beaker B = 2 L

Volume of Oil in Beaker B = 2*0.4 = 0.8 L

Volume of Vinegar in Beaker B = 1*0.6 = 1.2 L

If half of the contents of B are poured into A and assuming a homogeneous mixture, the new volumes of oil (Voa) and vinegar (Vva) in beaker A are:

$V_{oa} = 0.3+\frac{0.8}{2} \\V_{oa} = 0.7 \\V_{va} = 0.7+\frac{1.2}{2} \\V_{va} = 1.3$

The amount of oil needed to be added to beaker A in order to produce a mixture which is 60 percent oil (Vomix) is given by:

$0.6*V_{total} = V_{oa} +V_{omix}\\0.6*(V_{va}+V_{oa} +V_{omix}) = V_{oa} +V_{omix}\\0.6*(1.3+0.7+V_{omix})=0.7+V_{omix}\\V_{omix}=\frac{0.5}{0.4} \\V_{omix}=1.25 \ L$

1.25 liters of oil are needed.

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3 years ago

A recipe calls for 15 oz of flour every 8 oz of milk. If you use 16 oz of milk, how much flour will you use?

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Answer:30 oz of flour

Step-by-step explanation:

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2 years ago

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Answer:

Yes

Step-by-step explanation:

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