Answer:
Sales tax: $352.50
Final Cost: $5052.50
Step-by-step explanation:
Answer:
B. All diagonal matrices are square matrices.
C. The size of any square matrix is m x m, where m is a positive integer.
Step-by-step explanation:
.45 is just 45/100. divide both numbers by 5 to get 9/20.
Answer:
90 minutes or 1 hour and 30 minutes
Step-by-step explanation:
If 18 minutes is 20% of the work time then you will have to get the 20% to 100% so i divided 20 by 100 and that got me 5 so I put 5 times 18 then that got me 90.
Distance = speed * time
for curtis d = st = 6t (where t is the time that he walks)
sean walks 20 seconds longer than curtis so we have the equation
d = s(t+20) = 5(t+20)
as the distances are the same we have
So sean has walked 100+20 = 2
6t = 5(t+20)
6t = 5t + 100
t = 100
so Sean walks 120 seconds when they had both walked the same distance.
