Answer: C
Y=90+6x/x
90 new tools + 6 dollars (x) over x dollars
Answer:
4.5 mph or 9/2 mph
Step-by-step explanation:
Let x be the rate of the current
Formula: Distance = rate x time
where rate upstream =(12-x) and time =2 hours
15=(12-x)(2)
15=24–2x
2x=24–15
2x= 9
x=9/2=4.5 miles per hour (rate of current)
The answer would be 56/299
Im assuming you mean 20pence? if so its 5 twenty pence in a pound so times 5 by 9 gives you 45
so there are 45 twenty pence in £9
Answer:
x<7
Step-by-step explanation:
12x>9(2x-3)-15
12x>18x-27-15
12x>18x-42
-6x>-42
x<7