Answer:
x = -2 and y = 2
Step-by-step explanation:
The given equations are :
-5x-2y=6 ...(1)
3x+6y=6 ...(2)
Multiply equation (1) by 3. SO,
-15x-6y=18 ...(3)
Adding equation (2) and (3).
3x+6y-15x-6y = 6+18
-12x = 24
x = -2
Put the value of x in equation (1).
-5(-2)-2y=6
10-2y=6
4=2y
y = 2
So, the value of x is -2 and y is 2.
Answer:
1 is 2x45
2 is x348
3 is x78
4 is x89
Step-by-step explanation:
Answer:
- -1
- 0
Step-by-step explanation:
1. cos(π) = -1
2. sin(π) = 0
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It is useful to memorize the table below.