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lapo4ka [179]
3 years ago
10

-[tex]-8\9 + 1/5+ -8/15

Mathematics
1 answer:
TiliK225 [7]3 years ago
4 0

Answer:

-\frac{11}{9} , OR -1\frac{2}{9}, OR -1.2

Step-by-step explanation:

-\frac{8}{9}+\frac{1}{5}+(-\frac{8}{15})      When there is a (+) in front of an expression in parentheses, the expression remains the same

-\frac{8}{9}+\frac{1}{5}-\frac{8}{15}  Calculate the sum or difference

-\frac{11}{9}

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The original expression is given by:
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8 0
4 years ago
You have 15 milliliters of a drink that contains 15% milk. How many millimeters of a drink containing 63% milk needs to be added
Igoryamba

Answer:

4 ml of the 63% milk drink

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Multiplying 15 ml by 0.15 results in 2.25 ml, the amount of whole milk in the drink.  Let m represent the number of ml of a drink that is 63% milk.

The final amount of milk drink that is to be 45% milk will be 15 ml + m, and the amount of whole milk contained in this drink will be 0.45(15 + m).

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