Will crown brainliest

B)

Step-by-step explanation:

If y = z then replace z for y in the second equation.

2 y + z = 12

2y + y = 12

3y = 12

y = 4

This also means z = 4.

Insert both of these values into the first equation:

x + y + z = 8 + 2sqr3

x + 4 + 4 = 8 + 2sqr3

x + 8 = 8 + 2sqr3

x = 2sqr3

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation: