Solve each system by elimination I need to know what x and y equal and I need to show ( a little bit )work

Step-by-step explanation:

-x-3y=7-2x+3y=-14

-3x-6y=21**

-3x-6y=21

-3x=21

x=-7**

-3x-6y=21

-6y=21

y=-3.5**

3 ft

step-by-step explanation:

since the triangle is right use pythagoras' identity to solve for a

the square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

a² + 8² = ( )²

a² + 64 = 73 ( subtract 64 from both sides )

a² = 9 ( take the square root of both sides )

a = = 3

"if it is my birthday, then it is snowing"