I'm sorry idk how to do it
A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.
From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.
Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.
Divide everything by 8 to isolate b and you get that b^2=9.
Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.
Now that we know that a=2 and b=3 just plug them into the equation.
-2(2)+3(3)=?
-4+9=?
5
Sorry about having to use this ^ symbol, the equation maker is not working.
If both numbers were the same, they would be -11 and -11 .
Take '1' away from one of them and give it to the other one.
You haven't changed their sum, but now they're<em> -12</em> and <em>-10 </em>.
<u>Answer</u>
A. Because it earns interest.
<u>Explanation</u>
We save money in the financial institutions like banks and micro-finance institutions. This institutions uses this money to do business with it such as lending it to other people, setting up other money generation activities among others.
By so doing your money must be increased since it is used in other ways. These money increase is known as interest.
So the money you save increase in value over the time because it earns interest.
