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UNO [17]
3 years ago
7

How much pure alcohol must be added to 400 ml of a 15% solution to make its strength 32%

Mathematics
1 answer:
NISA [10]3 years ago
6 0
Quantity of alcohol =400*15/100 = 60ml
x is <span>pure alcohol which must be added : (x + 60)/(x + 400) = 32/100
100x + 6000 = 32x + 12800 => 68x = 6800 => x = 100
100ml pure alcohol must be added

</span>
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What is mZDAR in circle A?
Andreas93 [3]

Answer:

68°

Step-by-step explanation:

Since, angle subtended on the circumference of the circle is half angle subtended on the center of the circle.

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5 0
3 years ago
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Answer:

You could have a set of [5, 7, 13, 15, 5]

Step-by-step explanation:

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<u>Definition of the mode of a set:</u>

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The median of a set of data is the middlemost number or center value in the set. The median is also the number that is halfway into the set. To find the median, the data should be arranged, first, in order of least to greatest or greatest to the least value.

The mean is 9 (5 + 7 + 13 + 15 + 5).

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Hope this helps.

7 0
3 years ago
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Black_prince [1.1K]

Answer:

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Cancel out - 2x to get the variable on one side.

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11 = 3x - 1

Do the same with the 1.

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