perezsamantha3oqr0za
29.06.2019 •
Mathematics
When jonas does his math homework, he spends an average of 2 minutes on each problem. last night he spent 1.6 hours on his non-math homework, plus he completed 5 math problems. approximately how much time did jonas spend in total on all of his homework last night? a. 1.3 hours b. 2.7 hours c. 1.8 hours d. 2.2 hours
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Ответ:
C.
1.8 hours
Step-by-step explanation:
total homework time = math homework time + non math homework time
math homework time = 5 problems * 2 minutes/problem
= 10 minutes
= 10 minutes * 1hr/60 minutes = .167 hrs
non math homework time = 1.6 hours
total homework time = math homework time + non math homework time
total homework time = .167 + 1.6
total homework time = 1.77 hrs
rounding
total homework time = 1.8 hrs
Ответ:
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