Anutritionist has a formula for a protein-rich food that requires 20 milligrams (mg) of calcium per serving. how many milligrams of calcium are needed for 12 servings?

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

(urgent ) use pi 3.14 to estimate the circumference of the circle to the nearest hundredth middle is 4in (urgent )

Miranda is braiding her hair. then she will attach beads to the braid. she wants 1_3 of the beads to be red. if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?