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

----------------------------------------------------

y² + 1 - 17 = 0

y² - 16 = 0 ( add 16 to both sides )

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

y = ± = ± 4

180 square centimeters

step-by-step explanation:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length