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Ganezh [65]
3 years ago
15

What is [(3n+2)-0.02]×5

Mathematics
1 answer:
gtnhenbr [62]3 years ago
3 0

Answer: i havent done this in a long long time but i think it may be

15n-0.10

Step-by-step explanation:

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3 years ago
A 25% vinegar solution is combined with triple the amount of a 45% vinegar solution and a 5% vinegar solution resulting in 20 mi
Murrr4er [49]

Complete Question: A 25% vinegar solution is combined with triple the amount of a 45% vinegar solution and a 5% vinegar solution resulting in 20 milliliters of a 30% vinegar solution.

Write an equation that models this situation and explain what each part represents in the situation. Then solve the equation.

Step-by-step explanation:

let the volume of the 45% vinegar solution be x litres ,

the volume of the 25% vinegar solution be 3x

and the volume of the 5% vinegar solution be y

summation of all gives,

x+3x+y = 20

4x + y = 20

subtracting 4x from both sides to make y the subject of the equation, we have;

y = 20 - 4x

To the concentration:

substituting for the value of x and y into equation x + 3x + y = 20, we have,

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multiplying through by 100  to make whole figures we have;

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x = 5.

7 0
3 years ago
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