Answer:
x=3, y=0.8
Step-by-step explanation:
8x+5y=28
4x+5y=16
Subtract the second simultaneous equation from the first.
You are left with: 4x=12
12/4=3
x=3
Substitute this back into one of the equations.
8(3)+5y=28
8*3=24
28-24=4
4=5y
4/5=0.8
y=0.8
Answer:
z = 4
Step-by-step explanation:
12z - 18 = 30
add 18 to both sides:
12z = 48
divide by 12:
z = 4
AC = 75 x 2 = 150 degrees
Given:
The figure of a quadrilateral ABCD.
To find:
The supplement of angle ABC.
Solution:
We know that, two angles are called supplementary angles if their sum is 180 degrees.
So, 
is not a supplement of 
.
So, 
is not a supplement of .
So, 
is a supplement of .
In the same way 
.
So, 
is not a supplement of .
Therefore, the correct option is C.
Answer:
No solution I believe
Step-by-step explanation:
