Which system has (-2, -2) as the solution?
which system has no solutions?
which system has infinite solutions?

a. x + y = -1
4x + 4y = -4
b. x + y = -4
-3x + 2y = 2
c. 4x + 6y = -12
2x + 3y = 9
d. x - y = -2
3x - y = 0
e. x - 4y = -8
2x - 3y = -16

Write the equation in logarithmic form 8^x=64

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.