Soo what do you need help with? It seems pretty easy. I can help you if you want.
Answer is 2.60....its too easy if we devide 10/6.50 we will get 0.65 and next if 1pen costs 0.65 we should multiply it to 4 . 0.65 x 4 = 2.60
Answer with explanation:
Number of Letters from which we have to make four-letter passwords
={A,B,C,D,E,F,G}=7
Since repetition of digit is not allowed.In Permutation order of arrangement is Important,while in combination order of arrangement is not Important.
Out of seven letters we have to select four letters, keeping in mind the order of Alphabets.So, we will use the concept of Permutation.
Number of ways of arrangement,that is to make four letter password from 7 Alphabets

So, total number of ways of making password from 7 alphabets=840 ways
Second Method⇒
Since repetition of alphabets is not allowed, first Alphabet can be chosen in 7 ways , second alphabet can be chosen in 6 ways, third alphabet can be chosen in 5 ways, fourth alphabet can be chosen from four alphabets.
So, total number of ways of making four letter password
=7×6×5×4
= 840 ways
Answer:
B.Her Mortgage
Step-by-step explanation:
The net worth is the value that left after deducting the liabilities from the assets
Here as per the given options, the original sale price of the car, saving account balance and the value of her 401(k) plan is an asset
While the liabilities is the mortgage that took by her as she has to repay the amount taken by the financial insititution. It is her responsibility to pay back all the dues to the bank
Therefore the option B is correct
1980
sum of degree in a polygon
number of sides - 2 × 180
13-2×180 = 1980