Answer:
2 : 3
Step-by-step explanation:
We need to convert minutes to seconds
1 minute = 60 seconds
2 minutes = 2*60 = 120 seconds
80 seconds : 120 seconds
Divide by 40
80/40 : 120/40
x²+2 ×x×5+5²=-20x+2×x×5-3
(x+5)²=-20+10x-3
(x+5)²=-10x-3
in total 5 hours
Using proportions part/whole, percent/100 you put the 40 in the percent spot and the 2 in the part spot cross multiply and divide so 2 x 100 divided by 40 and you get 5
