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Isabella1319
29.11.2019 •
Mathematics
Brandon's class has 7 boys and 13 girls. explain how do the ratios 7: 13 and 7: 20 describe brandon's class?
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Ответ:
Ответ:
c= 61m
Step-by-step explanation:
using Pythagoras theorem, sin33°=a/c
sin33°=33/c
using tables, sin33°=0.5446
substituting,
0.5446=33/c
cross multiply
0.5446*c=33
divide both sides by 0.5446
c=33/0.5446
c=60.5949321
c=61m (to the nearest whole number)