To find the decreased percentage,here's what we can do:

In this case,the eqaution would be:

Hope it helps!
Answer:
C. PR and SQ have the same midpoing
Step-by-step explanation:
The equation set up would look like this.. 16•26.2=416.32 of what Robertos completion of the marathon
Answer:
a=-36
Step-by-step explanation:
1/6(a+12)=-4
1) Distribute <u>1/6</u> to a and 12:
1/6a+2=-4
2) Subtract 2 from both sides:
1/6a=-6
3) Multiply both sides by the reciprocal of 1/6: (6/1)
a=-36
Let me know if you have any confusion on how I reached the solution :)