The answer is 29.4 grams.
How to solve:
1. Convert $15 to quarters. You can do this by multiplying 15 by 4. You use 4 because 4 quarters equal to $1. This will equal to 60 quarters.
2. Multiply both 5.76 and 6.25 by 60 to find the weight of $15 in quarters for today and before 1965.
Today: 5.76 g x 60 = 345.6 grams
Before 1965: 6.25 g x 60 = 375 grams
3. Now that you have the weight of quarters for both time periods, subtract! 375 grams - 345.6 grams = 29.4 grams
Here is one example of when you would use the friendly number strategy to subtract.
42 - 18
We will turn the 18 into a friendly number, which is going to be 20.
(42 + 2) - (18 + 3)
44 - 20
Now it is easier to subtract 44 - 20 than it is 42 -18. With 42 - 18 we would have to barrow whereas with 44 -20 we do not have to barrow and we can do it in our head easier and makes it faster.
Answer:
19/6n - 7/2
Step-by-step explanation:
4n - 5/6n - 4 + 1/2
4 = 24/6
24/6 - 5/6
19/6
-4 = -8/2
-8/2 + 1/2
-7/2
19/6n - 7/2
Richard can buy 8 body soaps. Because 80 - 25 = 55 and 55 - 15 = 40 Now 40 divided by 5 is 8.
Plug in each pair into each system of inequalities. And see which one fits