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sweet [91]
3 years ago
12

Divide 5 liters in the ratio 11:5:9. Give your answer in milliters.

Mathematics
1 answer:
velikii [3]3 years ago
3 0

Answer: we have  2,200milliters, 1000milliters, 1800milliters.

Step-by-step explanation:

Step 1

1 Liter= 1000 millilitres

5 liters = 5000 millilitres

Step 2

Dividing 5000 ml in the ratio 11:5:9

First, we find the  Total ratio = 11+5+9 = 25

Such that

First  part = 11/25  x 5000 = 2,200milliters.

Second Part = 5/25 x 5000=1000milliters.

Third part =9/25 x 5000=1,800milliters.

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A student repeatedly measures the mass of an object using a mechanical balance and gets the following values: 560 g, 562 g, 556
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Step-by-step explanation:

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\sigma=\sqrt{\dfrac{\sum(x_i-\overline{x})^2}{n}}

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Then,  \overline{x}=\dfrac{\sum_{i=1}^{10} x_i}{n}\\\\\Rightarrow\ \overline{x}=\dfrac{560+562+556+558+560+556+559+561+565+563}{10}\\\\\Rightarrow\ \overline{x}=\dfrac{5600}{10}=560

Now, \sum_{i=1}^{10}(x_i-\overline{x})^2=0^2+2^2+(-4)^2+(-2)^2+0^2+(-4)^2+(-1)^2+1^2+5^2+3^2\\\\\Rightarrow\ \sum_{i=1}^{10}(x_i-\overline{x})^2=76

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4 years ago
Ellen bought 18 boxes of paper clips. Each box had 150 paper clips. How many paper clips did Ellen buy
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