In complete sentences give an example of when the sum of two irrational numbers equals an irrational number, and give an example of when the sum of two irrational numbers equals a rational number.

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

4th option is correct xy=-10

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option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,