Answer:
hello : coordinate pair is: (5 ; 1)
Step-by-step explanation:
you have this system :
5x - 3y=22 ......(1)
-4x + y= -19.....(2)
by (2) : y = 4x -19
put y in (1) : 5x - 3 (4x -19) =22
5x -12x +57 = 22
- 7x = -35
x = 5
but : y = 4x -19 so : y = 4(5) -19 = 1
coordinate pair is: (5 ; 1)
x/y + 3z^2 for x= 2/3, y= 6/7, and z=3
=2/3 / 6/7 + 3(3^2)
=2/3 * 7/6 + 3(9)
= 7/9 + 27
= 7/9 + 243/9
= 250/9
answer is a. 250/9
it is 5/12
5+5+5+5= 20
12+12+12+12=48
