A formula for ivy cream includes 3 g of hydrocortisone in a total of 60 g of ointment. If an order calls for 45 g of this ointment, how much hydrocortisone will be needed?

Explanation:

This is just a proportion.

3 grams hydrocortisone                 x    

   =  

60 grams of ointment               45 grams of ointment

3/60 = x / 45               Cross multiply

45 * 3 = 60 * x             Combine the left.

135 = 60* x                  Divide by 60

135/60 = x

x = 2.25 grams of hydrocortisone.            

answer:

None of them! It's just a virus.

Explanation:

Virus is an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.

Anti-vaccination beliefs can cause real, substantive harm, as shown by the recent outbreak of measles in the US.

Explanation: