solve the following pair of simultaneous equation 5x-2y=14, 2x+2y=14
I am a jss3 student pls help me
To solve the simultaneous equations 5x - 2y = 14 and 2x + 2y = 14:
1. Rearrange the second equation to solve for y:
2x + 2y = 14
2y = 14 - 2x
y = 7 - x
2. Substitute this expression for y into the first equation:
5x - 2y = 14
5x - 2(7 - x) = 14
5x - 14 + 2x = 14
7x = 28
3. Solve for x:
7x = 28
x = 4
4. Substitute this value of x back into either equation to solve for y:
2x + 2y = 14
2(4) + 2y = 14
8 + 2y = 14
2y = 6
y = 3
Therefore, the solution to the simultaneous equations 5x - 2y = 14 and 2x + 2y = 14 is x = 4 and y = 3.
There are six possible outcomes when a die is cast, which are numbers 1 through 6. Of these six possible outcomes, there are three prime numbers: 2, 3, and 5. Therefore, the probability of getting a prime number is 3/6 or 1/2, which simplifies to 0.5 or 50%.
pls I can't,help me
Please can you help me on how to eliminate for y
If a die is cast ,what is the probability of getting a prime number
5x-2y=14and 2x plus 2y=14
7x - 4y=28
I can't help me
Oops. adding the equations eliminates y.
7x = 28
...
You meant:
I can't; help me.
5x-2y = 14
2x+2y = 14
------------- add the two equations
4y = 28
I expect that you can handle it from here, eh?