Answer: w = -10.5
Step-by-step explanation:
first, divide both sides by -0.4. basically, that leaves "w" alone on one side, and we are just dividing 4.2 by -0.4. that gets us the answer.
Answer:
D
Step-by-step explanation:
X+2y=10
-4x-y=2
first, isolate x in first equation: x=10-2y
substitute value of x in first equation (10-2y) into second equation:
-4(10-2y)-y=2
-40+8y-y=2
7y=42
y=6
put value of y (6) into either equation to solve for x
x+2(6}=10
x+12=10
x=-2
x=-2, y=6
prove by inserting x and y values into either equation
-4x-y=2
-4(-2)-6=2
8-6=2
2=2
or
x+2y=10
-2+2(6)=10
-2+12=10
10=10
I’m truly so sorry. i was i knew the answer to this question, but unfortunately i don’t. good luck. but they usually don’t give the right answers and there’s always trolls so i’d recommend to get another app
