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darenl4478
16.12.2020 •
Mathematics
If an angel is double of its completement. find the angle.
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Ответ:
Step-by-step explanation:
Let the angle be x and 2x
x+2x=90
3x=90
x=90/3=30
x=30
2x=60
Ответ:
where
For substance A:
Since we have 300 grams of the substance,
For substance B:
Since we have 500 grams of the substance,
Since they are trying to determine how many years it will be before the substances have an equal mass
We can conclude that the system of equations that can be used to determine how long it will be before the substances have an equal mass,
Solving the system, we can show that it will take approximately 231.59 years for that to happen.