To start off with $10.50 is 1050 cents. For the cleaning, he works 1 and 3/4 hours. That's $10.50 for one hour. $10.50/4 is $2.62 (rounded to a whole number.) Total: $13.12. For the paperwork, he works 2 and 1/3 hours. So that's $21 for 2 hours. $10.50 divided by 3 is $3.50. Total for paperwork is $24.50. For serving customers it's $10.50 for 1 hour. 10.50/12 is 87.5 cents so around 87 cents.. Total: $11.37. For the total earnings it is $13.12 + $24.50 + $11.37 = $48.99. (not that I have rounded all answers to whole numbers (you can't have a 1.5 cents for example)
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Answer:
1. d=m/v
=57.6/112.9
=0.51018601
=0.510g/cm³(3s.f.)
2. m=d×v
=1.8×54
=97.2g
3. v=m/d
=63.8/12.7
=5.02362205
=5.02cm³(3s.f.)
4. v=length×breath×height
=12×2×6
=144m³
216g=0.216kg
d=m/v
=0.216/144
=0.0015kg/m³
Step-by-step explanation:
density=mass/volume
mass=density×volume
volume=mass/density
*make sure the units are correctly placed.
*g/cm³, kg/m³
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