A(n) is a letter or symbol that represents some unknown value.
a. term
b. equation
c. variable
d. expression

Deshawn uses 3/4 of a box of rice to cook dinner the portion he uses weighs 12 ounces right and solve an equation to find the weight of the full box of rice

If the value of cos330°is√3/2 then find cos 165°.

Consider circle c with angle acb measuring 3/4 radians. if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.