Seven students cut 5 3/4 inches of thread from a spool for a school project. what number represents the change in the amount of the thread on the spool?
a.) -40 1/4b.) -35 3/4c.) -29 3/4d.) -26 1/4

The Option A is correct.i.e.,  

Step-by-step explanation:

Given: Length of thread a student cuts = inches

           total no. of student that cut thread = 7

To find: Number which represent change in amount of thread on spool.

Length of thread a student cuts =

                                                     =

                                                     = inches

Length of thread 7 student cuts =

                                                     =

                                                     =   inches  (Coverting into mixed fraction)

So, negative of length  that 7 student cut from spool is the number represent change in amount of thread.

Therefore, The Option A is correct.i.e.,  

yes. we do proportions in probabilities.

72 is the answer to this problem