Which equations for the measures of the unknown angles x and y are correct? Check all that apply.
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a
<= cos()
O x=sin(6)
b
O x = tan-1
y
Dy=sin 1(a)
Oy=cosho)

Which of the following contains a variable?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?