Answer:x=8 and y=2
Step-by-step explanation:
To find 2x-4y=8 and 3x+6y=36
Solve simultaneously
Using elimination method
6x-12y=24
6x+12y=72
To eliminate x
-24y=-48
Divide through by -24
y=2
To get x
Substitute for y in equation 1
2x-4(2)=8
2x=8+8
2x=16
Divide through by x
x=8
The answer is 6x-17 = 47+10x
B - 8
i believe is correct
Here is the mistake is on 9x1/100 because after decimal 9 is there means
9 has to be multiplied by 1/10 to get the 0.9
Here if we expand the 103.903 then from left to right
1 = 1x100 +
0 = 0x10 +
3 = 3x1 +
9 = 9x1/10+
0 = 0x1/100+
3 = 3x1/1000 = 103.903
Answer:
1
Step-by-step explanation:
note that i = , thus
i² = ( )² = - 1
= i² × i² = - 1 × - 1 = 1