What are the values of x and y in the matrix equation below?

x = - 3, y = ± 4

Step-by-step explanation:

Add corresponding elements and equate to corresponding element on right side, that is

x + 4 - 9x = 28

- 8x + 4 = 28 ( subtract 4 from both sides )

- 8x = 24 ( divide both sides by - 8 )

x = - 3

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y² + 1 - 17 = 0

y² - 16 = 0 ( add 16 to both sides )

y² = 16 ( take the square root of both sides )

y = ± = ± 4

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.