The answer for the problem is 45/4 is the improper fraction so that is the answer
100y+x=230
150y+x=320
Y being the price per kilogram of steel bar, x being the added delivery fee.
If you were to solve the equaltion it would go x=230-100y by changing the first equation around the replacing that for the x int he second group, so you would get 150y+230-100y=320 or 50y=90 So Y=9/5dollars per kilogram. Or $1.8per kilogram, the delivery fee being $50
When you're trying to find an estimate, the best thing to do is to round them accordingly.
357.9 can be rounded to 360 (as it is over 5, therefore, it is rounded up)
21 can be rounded to 20 (as it is under 5, it is rounded down)
Then to find the miles per gallon, you need to divide the distance driven (360), by the amount of gas (20)
360/20= 18
As an estimate, Ellen gets 18 miles to the gallon.
(The actual answer is 357.9/21= 17.13 miles to the gallon)
Hope this helps :)
Answer:
The reciprocal of 7 is 1/7.
Step-by-step explanation:
