She can put 36 because nCr is 9C7, so according to find different permutation.
When adding a positive number with a negative number you will act as if you are subtracting the two numbers, then take the sign of the largest number (disregarding the signs). In this case the largest number is 40 and its sign is positive. Your answer will have a positive sign.
40 + (-11) = 29
Hope this helped!
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Answer:
Total number of charms added would be 3.
Total cost of the bracelet = $ 63.
If Bella adds 3 charms to her bracelet, it will cost $ 63 at either shop.
Step-by-step explanation:
Let the number of charms added be .
Total charge by Norwood Fine Jewelry for charms =
Total charge by Acosta Jewelers for charms =
If the charge by both the jewelers are to be same, then,
Therefore, 3 charms are added to the bracelet to make the total charge at either of the jewelry shop same.
Now, total charge at either of the jewelry shop for is:
Total charge =
If Bella adds 3 charms to her bracelet, it will cost $ 63 at either shop.