(1) 3x+2y=-1
(2) 6x+4y=0
This system of equation has no solution. Proof
multiply all the term of (1) by two ==>6x+4y=-2
Notice that in (2) you have the same thing but equal to zero.
Same quantity can't equal 0 & -2. So no solution
Answer: a 180 degree rotation about the origin, then a dilation by a scale factor of 1/3
Step-by-step explanation:
Answer:
−19
Step-by-step explanation:
−18+1+13−15
=−17+13−15
=−4−15
=−19
Method 1 :
(152+138+160)÷3 = 150
(152+138+160+198)÷4 = 162
Then his average score will increase
Method 2 :
Since 198 > 150 then the average will increase automatically.
