Afair number cube is rolled. what are the odds in favor of rolling a 1?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).