4 x 7= 28
BTW no calculator. Did it in my head. Hope this helps!
Answer: Choice C)
(x-2)(3x) + (x-2)(4)
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How to get this answer? One easy way that might work is to let y = x-2, which will allow us to do a replacement.
We will go from (x-2)(3x+4) to y(3x+4). Now use the distributive property to multiply the y term by each term inside
y(3x+4) = y*3x + y*4 = (y)*(3x) + (y)*(4)
The last step is to re-introduce y = x-2 back in. So replace y with x-2 like so
(y)*(3x) + (y)*(4) = (x-2)*(3x) + (x-2)(4)
Answer:
See below
Step-by-step explanation:
Sum of ingredients = sum of final solution
.50 x where x = 50 percent amount then 40 - x = 18% amount
.50 x + .18(40 - x) = .30 ( 40 )
.50 x + 7.2 - .18x = 12
.32x = 4.8
x = 15 L of 50% 25 liters of 18%
Answer: If it is 2,500 mL then the answer would be 2.5 L
Step-by-step explanation: 1000 mL = 1 L
