Leila purchased 21.5 centimeters of wire for $17.20. Find the unit price in dollars per centimeter.
If necessary, round your answer to the nearest cent.

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

The ideal weight of a nickel is 0.176 ounce. to check that there are 40 nickels in a roll, a bank weighs the roll and allows for an error of 0.015 ounce in total weight