Solve 3 of them if you are SMART in Mathematics! Write the answer of the 3 of them like this:
For example:

1) = (Answer)
2) = (Answer)
3) = (Answer)

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

If the perimeter of the garden is 37 ft. the width is x and the length is 15 ft. what is the width of the garden in feet?