Answer:
Step-by-step explanation:
Given equations are
15x + 15y + 10z = 106
5x + 15y + 25z = 135
15x + 10y - 5z = 42
The augmented matrix by using above equations can be written as
Hence, we can write from augmented matrix,
Answer: The fraction of the minutes did Billy use = .
Step-by-step explanation:
Let x = Total minutes given in the plan.
Last month, Jodie used of the minutes.
Remaining minutes =
Billy used = minutes
Fraction of the minutes used by Billy =
Hence, the fraction of the minutes did Billy use = .
Yes it is
since the painter can paint half a room in half a day, they can paint a full room in a full day
7 rooms for 7 days maintains the 1 to 1 ratio