Bronze is a mixture of copper and tin. The copper and tin are in the ratio 9:1.
a) How much tin is there in a bronze bracelet weighing 270 grams?
grams
b) Another bronze bracelet contains 180 grams of copper.
How much does it weigh altogether?
grams

yes. we do proportions in probabilities.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^