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Tommy is twice as old as his younger sister.The sum of the siblings' ages is 21. Which equation can be used to determine the age of Tommy's younger sister? A. x-2=21 B. x+2x=21 C. 2x=21 or D. x/2=21
answered
Oct 3, 2018
Mathematics
high-school
5
votes
1.9k
views
The delegates who created the United States constitution devised a government that was divided into 3 separate branches what was the purpose of this division A) to protect individual liberties and freedoms
answered
Jun 23, 2018
History
middle-school
1
vote
31.7k
views
Verify (tanx-cotx)/sinxcosx = sec^2x-csc^2x
answered
Jun 22, 2018
Mathematics
high-school
2
votes
2.3k
views
Who was not opposed to the unification of italy?
answered
Jun 12, 2017
History
high-school
2
votes
42.7k
views
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