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aprilpendergrass
20.09.2019 •
Mathematics
The directions for mixing an insect spray say to use 1 3/4 ounces of chemical in each gallon of water. how many ounces of chemical should be mixed with 4 1/5 gallons of water?
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Ответ:
Now convert the new water gallons to an improper fraction: 4 1/5 gallons
--> 21/5 gallons
Now 21/5 gallons water × 7/3oz./gallon water = 21×7/5×3 = 7×7/5 = 49/5oz.--> convert to mixed number: 9 4/5oz. chemical in order to make 4 1/5 gallons of mixture.
Ответ:
=(5/3)(10/3)
=(5)(10)
(3)(3)
=50/9 (~5.6)
Let's simplify step-by-step.
(8+7a)+4
Combine Like Terms:
=8+7a+4
=(7a)+(8+4)
=7a+12
=7a+12 (d.)