Answer:
-8/9z - 3
Step-by-step explanation:
Actually, this is false. 6 and 4 both have <em>12 </em>in common because 6*2=12 and 4*3 is 12. So the least common denominator is really 12.
12/15=4/5 original speed
12/20=3/5 increase by 5mph
He will reach 12 minutes earlier than he goes 15 miles per hour.
Correct me if I am wrong.
Answer: it would take them 4.24 hours
Step-by-step explanation:
It takes Emily eight hours to paint her house. Her unit rate of working in terms of hours would be 1/8
Mike can paint the same area in nine hours. Mike's unit rate of working in terms of hours is 1/9
If both of them can work together,Then, the work would take lesser time because they would be working together at their own unit rates. This means that the rates are additive. Their combined rates would be 1/8 + 1/9
Let t be the time it takes them to finish the work together. This means that their unit rate of working together will be 1/t. Therefore,
1/8 + 1/9 = 1/t
17/72 = 1/t
17t = 72
t = 72/17
t = 4.24
What activities are the examples there’s nothing there