At the 1997 rate of consumption, what year will the estimated 2,000 billion barrels of oil last?

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In a command economy, the majority of goods and services are provided by the

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.