To break the school's record, the girls' time had to be faster than 12 minutes. Did the girls break the record? If so, how much faster were
they? If not, how much slower were they?

i do not know this sorry : (

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

30005

yes ok                                            

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5