Answer:
a = 20 . . . . liters
Step-by-step explanation:
To solve this, multiply the equation by 30+a:
a = 0.4(30 +a)
a = 12 + 0.4a . . . . . eliminate parentheses
0.6a = 12 . . . . . . . . subtract 0.4a
a = 12/0.6 = 20 . . . divide by the coefficient of a
20 L of alfalfa must be added
_____
<em>Check</em>
20/(30+20) = 20/50 = 40/100 = 0.4 . . . . . . answer checks OK
29 jars because if every box as 12 jars you multiply 12×29= 348
then multiply 29×16=$464
Answer:
d > -2
Step-by-step explanation:
-2d-2 < 3d+8
3d+8 > -2d-2
3d + 2d > -2 -8
5d > -10
d > -2
<em>Feel free to mark this as brainliest! :D</em>
