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Which of these is equal to cos 47°? a. cos 43° b. sin 43° c. tan 43° d. cos 133°
asked
Feb 24, 2017
Mathematics
high-school
2
answers
1
vote
164k
views
Peggy had four times as many quarters as nickels. She had $2.10 in all. How many nickels and how many quarters did she have? If the variable n represents the number of nickels, then which expressions represents
asked
Jan 14, 2017
Mathematics
high-school
1
answer
1
vote
215k
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