1. The first equation is - 2x + 5y = 0
Second equation is 
5y = 2x
- 2x + 5y = 0
Hence, the two equations are equivalent.
2. 




Hence, the equations are consistent.
3. 




Hence, the equations are consistent.
4. Equations can be re-arranged as:
x + y - 4 = 0 and
x + y + 6 = 0







Hence, the equations are inconsistent.
5. If we multiply the first equation by 4, we will get,
2y = -4x + 20 which is the second equation.
Hence, the equations are equivalent.
Answer:
60 cm2
Step-by-step explanation:
15x4=60
Answer
(0.8) (120)
80/100 is 80%
A.) The mean of the 8th and 9th values
Answer:
y=1.6 repeatin
Step-by-step explanation: