Answer:
1 hour
Step-by-step explanation:
Multiply the total time for the party by the fraction that she skated
3*1/3 = 3/3 =1
1 hour
8 hours because...
864 576
---- = ----
12 x
6912=12x
x=8
Do you have a pic so I can answer your question
Answer:
2a+15 = 125(being alternate angle)
or,2a = 125-15
or,2a = 110
or,a = 110÷2
,a = 55
again,2a+15+b+30=180(Being co-interior angle)
or,2×55+15+b+30=180
or,110+15+30+b=180
or,155+b=180
or,b=180-155
Therfore,b=25
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