Convert. When necessary, round the answer to two decimal places.8 pounds = ____ ounces

A. 90
B. 170
C. 139
D. 138


Answer: D

Mathematics

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Solve the problem.To convert temperatures from Celsius to Fahrenheit, multiply the temperature in Celsius by  and add 32. If the temperature is 15°C, what is the temperature in Fahrenheit?

A. -5°F B. 84.6°F C. 167°F D. 59°F

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Using Green's Theorem, calculate the area of the indicated region.The astroid r(t) = (8 cos 3t)i + (8 sin3 t)j, 0 ? t ? 2?

A. 12? B. 2? C. 48? D. 24?

Mathematics

Solve the system of equations by the addition method.

A. (-5, -2) B. (5, -2) C. (-5, 2) D. (5, 2)

Mathematics

Solve the problem.Inclusive of a 6.3% sales tax, a diamond ring sold for $3,082.70. Find the price of the ring before the tax was added. (Round to the nearest cent, if necessary.)

A. $2,888.49 B. $194.21 C. $3,276.91 D. $2,900

Mathematics