The ratio of Jessica's stickers to Rod's stickers is 7:4. Jessica has 21 stickers How many stickers does Rod have?
stickers

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

41/17 as a decimal rounded to the nearest hundredth

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.