Convert the radical expression to its rational exponent form and then simplify. Assume that all variables represent positive numbers.
A. x7/6y6/5
B. x7/6y5/6
C. x6/7y5/6
D. x6/7y6/5
Answer: C
Mathematics
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cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
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Determine the place value of the digit 3 in the whole number.463,981
A. Hundred-thousands B. Ten-thousands C. Thousands D. Hundreds
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Subtract.
A. 193 B. 283 C. 1203 D. 293
Mathematics
Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Natasha rides her bike (at a constant speed) for 4 hours, helped by a wind of 3 miles per hour. Pedaling at the same rate, the trip back against the wind takes 10 hours. Find find the total round trip distance she traveled.
A. 40 mi B. 20 mi C. 14 mi D. 80 mi
Mathematics