Answer:
d=4
Step-by-step explanation:
(12d - 24) - (2 • (d - 3) + 22) = 0
10d - 40 = 10 • (d - 4)
10 • (d - 4) = 0
Solve : 10 = 0
Solve : d-4 = 0
Add 4 to both sides of the equation :d = 4
Answer: 5. √35. 6. √40
Step-by-step explanation:
Let x = liters 20% solution to be added
then
.12(12) + .20x = .14(12+x)
.12(12) + .20x = .14(12+x)
1.44 + .20x = 1.68 + .14x
.20x = .24 + .14x
.06x = .24
x = 4 liters
Hope this helped!!