Answer:
X= -5
Step-by-step explanation:
Expression: 2.8X+12=-1.4X-9
Order it: 12+9=-1.4X-2.8X
Simplification: 21=-4.2X
Results: x=-5
Answer: 75.36 in
Step-by-step explanation:
C = 2 x pie x radius
2 x 3.14 x 12 = 75.36
Multiply the second equation by 3, so 4x-y=6 becomes 12x-3y=18.
x + 3y = -5
+ (12x-3y = 18)
______________
13x = 13
So x = 1
Plug x = 1 into any of these, such as 1 + 3y = -5, which becomes 3y = -6, and then y = -2.
x = 1
y = -2
Answer:20-8w
Step-by-step explanation:
4x5 is 20
4x2w= 8w
