We're working on law of sines and cosines can anyone help me on this question? its a review packet ​

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Use your knowledge of the binary number system to write each binary number as a decimal number. a) 1001 base 2= base 10 b) 1101 base 2 = base 10

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