Answer:
x=-5, y=-2. (-5, -2).
Step-by-step explanation:
x-3y=1
-x+6y=-7
----------------
3y=-6
y=-6/3
y=-2
x-3(-2)=1
x+6=1
x=1-6
x=-5
Answer:
Yes
Step-by-step explanation:
2+9x2= That means 11 x 2
Answer: 80
Step-by-step explanation:
50+50=100
180-100=80
Answer:
The answer is 15.
Step-by-step explanation:
10% of 150 is 15. (you can take away the zero)
Answer:
(2). <em>b - (a + c)i </em>
Step-by-step explanation:
= [( i )²]³ × i = ( - 1)³ i = - i
=
× i = i
a(- i ) + b( 1 ) - c( i ) = - ai + b - ci = <em>b - (a + c)i</em>