First, you have x+y= 3k, x-y= k and what you need to do now is eliminate the y's because they have the same sign (- and +). So now you have x= 3k, x=k. You so then you add the x with the other x (2x) and the 3k with the k (4k). Now you have 2x = 4k , which is the same as x = 2k. Now that you now x in terms of k, you can put it in the very first system, like this: 2k+y=3k, 2k-y=k. If you solve them, first one and then the other, you will get the same result: y=k.
So, you can say that x=2k and k=y.
Hope that was helpful, have a good day! :))
Answer:d
Step-by-step explanation:
Answer:
Algebra 1 Answer Key with notes.pdf go on that and there are the anwers and the answer key :)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Amount = Rs 8820
Compound Interest = Rs 820.
Step-by-step explanation:
We have to find the amount and the compound interest on Rs. 8000 at 5% per annum for 2 years compounded annually.
Let the Principal sum of money = P
Rate of Interest = R
Time Period = T
Amount of money = A
As we know that Amount formula for compounded annually is given by;
Amount =
Or
Now, we are given with P = Rs 8000 , R = 5% p.a. and T = 2 years; we have to find the amount,i.e;
A =
A =
A = Rs 8820
That means Amount = Rs 8820
Also, Compound Interest formula is given by;
Amount = Principal + Compound Interest
Compound Interest = Amount - Principal
= Rs (8820 - 8000)
= Rs 820
Therefore, amount and the compound interest on Rs 8000 at 5% per annum for 2 years compounded annually are Rs 8820 and Rs 820 respectively.
B = account balance
An inequality to describe when a bank would charge a fee: b < $100
