Using the elimination method how do i do 5x + 6y = 50 -x + 6y =26

y = 5 and x = 4

Step-by-step explanation:

You need to get the same number either in front of both x's or both y's.

As there is already a value the same for both y's, we can already subtract the two equations:

5x - -x = 6x

6y - 6y = 0

50 - 26 = 24

6x = 24

Divide both sides by 6 to find x:

6x ÷ 6 = x

24 ÷ 6 = 4

x = 4

Substitute this value into first equation:

5(4) + 6y = 50

20 + 6y = 50

Move the +20 over to the other side making it a -20:

6y = 50 - 20

6y = 30

Divide both sides by 6:

6y ÷ 6 = 7

30 ÷ 6 = 5

So y = 5

This means that y = 5 and x = 4

Cosy° =

Step-by-step explanation:

From the picture attached,

By applying all trigonometric ratios in the given right triangle,

Siny° = =

tany° = =

Therefore, Cosy° =

Cosy° =

Therefore, Cosy° = will be the answer.