Robert runs 800 m in 2 minutes 15 seconds. He trains hard to improve his time and manages to decrease it in the ratio 13 : 15. Calculate the new time taken to complete the race AND state how much quicker he runs.

1) add 6 to 24, write the rest of the equation 10-2x= 30 subtract 10 from 30 2x=20 divide 20 by 2 and x=102) add 3 to -9 write the rest of the equation 4x+3=-6 subtract 3 from -6 4x=-9 x= -2.25  i don't know the rest sorry

Rise/run = slope35/10 = slopey = 35/10x + b35 = 35/10(3) +b35 = 10.5 + b24.5 = by = 35/10 +24.5hope this !