At a doctor's office, a vaccine must be measured at exactly 15 milligrams. How many centigrams is the equivalent of 15 milligrams?

Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?