How to do 15 1/2 - 2 1/10 how to do it

First, you need to make the fractions have the same denominator:

15  1/2        --->       15 + (1/2 x 5)  =   15  5/10

2   1/10       --->       2  1/10

Then you need to subtract them from each other:

  15   5/10                                        

-    2   1/10                   (or)                  15  5/10 - 2 1/10 =   13  4/10

   13   4/10

This gets the   13  4/10

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.