A zookeeper is ordering food for the zebras. she knows that 3 zebras eat 12 pounds of hay every day. How many pounds of hay should she order for 12 zebras ONLY A NUMERIC ANSWER

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

It says factor each expression 49x-28?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).