It's answer is D. Because from what I see it isn't the other answers.
Answer:y=-10
Step-by-step explanation:
y=-1/2 4(6(2)+3)-2y
+2y 6(2) +2y
3y=-1/2 4(12+3)
multiplie 4 times 12 and 4 times 3
3y=-1/2 48+12
add 48 and 12
3y=-1/2 60
divide -1/2 and 60
3y/3=-30/3
y=-10
The answer is 4, because of you count the number of Doty’s on the 6 and up, you would count 4 dots!
Suppose x grams of 8% solution should be mixed to make 100 g of 3% solution.
here we shall have:
the amount of 3% solution in the 100 g will be:
3/100*100=3 grams
the the equation will be, 8% of what quantity becomes 3g?
(8/100)*x=3
hence solving for x we shall have:
0.08x=3
x=3/0.08
x= 37.8 grams
The implication of this is that, when you have 37.5 grams of 8% solution, that will contain 3 of pure chemical and hence when you add more solvent on top of 37.5 g until you reach 100g, that will be 3% solution.
