$7.50/?=100/10 then criss cross and u will get 75/100=0.75
If I understand your question right, this is not necessary, but is very useful to keep problems organized.
Answer:
700
Step-by-step explanation:
420/3=140
140*5=700
R u asking the equations for the slopes of these points, the parallel the perpendicular slopes?? If m right tell me in the comments I'll answer you there.
Answer:
5.1 hours
Step-by-step explanation:
Given that :
Naomi:
Time taken = 9hours
Rate = 1/9
Ramona :
Time taken = 12 hours
Rate = 1/12
Working together :
Time. Taken = 1 / (sum of their rates)
Time taken = 1 / (1/9 + 1/12)
L. C. M of 9 and 12 = 36
Sum up f their rates :
(4 + 3) / 36 = 7/36
Time taken = 1 / (7/36)
= 36 / 7
= 5.142 = 5.1 hours
