1) 2/5
2) 3/7
3) - 7/18
4) 3/5
5) - 5/18
6) 8/21
7) 2/5
8) -5
9) 9
10) 4 1/2
11) - 77/20
12) 6 10/21
By the way, to write questions 3,5 and 11, you write on the page,
(This is for Question 11)
77
- ----
20
Answer:
40 miles a day
Step-by-step explanation:
The difference in fixed charge is $20; the difference in mileage charge is $0.50 per mile. So it will take $20/$0.50 = 40 miles for the extra mileage cost to eat up the savings in fixed cost. At that mileage, both companies will charge the same amount:
A: 90 + 0.30·40 = 102
B: 70 + 0.80·40 = 102
4 jar is the correct answer to the question
First 45 / 10
that is exactly 4.5 meaning there are 4.5 groups of 10 red balloons
63 / 4.5 is 14
There will be 14 blue balloons for every 10 balloons.
Hope this helps :)