A handbag contains five coins, four keys and eight mints. Two items are taken out
of the handbag one after the other and
not replaced. Find the expected number of
mints taken out of the handbag.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.