Answer:
A) 3x
Step-by-step explanation:
The total of all the volumes is ...
(x -1) + (x) + (x +1) = (1+1+1)x +(-1+1) = 3x+0 = 3x . . . . . matches choice A
Answer:
2 *( 3+7-9) =(1+5) - ( 8 -4 )
Step-by-step explanation:
2 _( 3_7_9) = (1_ 5) _ ( 8 _4 )
I just started playing with things
2 *( 3+7-9) = (1_5 ) _ ( 8 _4 )
2 * (10-9)
2*1
So the left side is 2
Now to make the right side 2
(1+5) - ( 8 -4 )
6 - 4
2
Answer:
x = - 4 y = - 4
Step-by-step explanation:
x+y= - 8
-9x-6y=60
First, solve for x in the first equation:
x+y = - 8 Subtract y from both sides
x + y - y = -8 - y y cancels on the left
x = - 8 - y
Now plug in what you found for x into the 2nd equation and solve for y.
- 9x - 6y = 60
-9(- 8 - y) - 6y = 60 Multiply out
72 + 9y - 6y = 60
72 + 3y = 60 Subtract 72 from both sides
72 - 72 + 3y = 60 - 72 72 cancels on the left
3y = - 12 Divie both sides by 3
3y/3 = -12/3 3 cancels on the left because 3/3 = 1
y = -4
Now plug your answer for y back into the first equation to get x.
x + y = -8
x + (-4) = - 8 Add 4 to each side
x - 4 + 4 = - 8 + 4 4 cancels on the left
x = -4
x = - 4 and y = - 4
25/100 =0.25
10 x 0.25= 2.5
Answer:
you'll know bc your fridge will be broken
Step-by-step explanation:
