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ridzrana02
24.01.2020 •
Mathematics
Approximate what a 15% tip would be for a bill of $31.99.
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Ответ:
Since it's an approximation, use 30 instead of 32 to make it easier.
30 / 10 = 3.0
So 3.0, or just 3, is approximately 10%. Divide by 3 by 2 to get 5%.
3 / 2 = 1.5
Since we know 10% is 3 and we know 5% is 1.5, we can add them together to see that 15% is 3 + 1.5 = 4.5 (approximately)
Ответ:
Ответ:
A: 5
Step-by-step explanation:
Rise over run is 3 over 4. Using the pathagorean thereom, you can calculate using the equation a^{2}+b^{2}=c^{2}.
Plug in (3)^2 + (4)^2 = the square root of 25