In a class 0f 25, 10boys play cricket, 5 boys play football, 4boys play hockey. 3boys play both football and cricket and 2 boys
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Okay, so first you are going to decide whether to solve for x or solve for y. I am going to solve for x. In order to do so, you must get x by itself.
![2x=y-6[ [tex]3x-4y=-4](https://tex.z-dn.net/?f=2x%3Dy-6%5B%20%5Btex%5D3x-4y%3D-4)
The next step is to set both equations equal to each other in order to find y.
\frac{y-
6}{2} [/tex]
So now you know that y=-2. The next part is substitution. All you have to do is pick on of the equations and plug in the y value to get the x value.
So your answer to the question is (-4,-2). I hope I've helped you understand how to solve these types of problems. If you have any questions, don't hesitate to ask.
The next step is to set both equations equal to each other in order to find y.
\frac{y-
So now you know that y=-2. The next part is substitution. All you have to do is pick on of the equations and plug in the y value to get the x value.
So your answer to the question is (-4,-2). I hope I've helped you understand how to solve these types of problems. If you have any questions, don't hesitate to ask.
Using compound interest, it is found that he must deposit $56,389.
Compound interest:
- A(t) is the amount of money after t years.
- P is the principal(the initial sum of money).
- r is the interest rate(as a decimal value).
- n is the number of times that interest is compounded per year.
- t is the time in years for which the money is invested or borrowed.
In this problem:
- Hopes to have $80,000 in 20 years, thus
.
- Interest rate of 1.75%, thus
.
- Compounding monthly, thus
- The investment is of P, for which we have to solve.
Then:
He must deposit $56,389.
A similar problem is given at brainly.com/question/25263233