Answer:
Step-by-step explanation:
Federal funding for the national center for missing adults declined from 1.5 million in 2002 to 1 million in 2006. The amount by which it decreased is determined by subtracting the amount in 2006 from the amount in 2002. It becomes
1500000 - 1000000 = 500000.
The percent decrease in the federal funding from 2002 to 2006 will de determined by dividing the decrease by the amount in 2002 and multiplying by 100. It becomes
500000/1500000 × 100 = 33.33%
Answer:
(42,28)
Step-by-step explanation:
set up the problem by converting percentages to decimal
x+y=70
.30x+.80y=50(x+y)
solve for x, so minus y in order to get it x alone. equation should look like this: x=70-y
30(70-y)+80y=50(70-y+y)
solve the equation for y
y=28
plug the value of y into the equation x=70-y
x=70-28
solve for x
x=42
check the solution of (42,28)
42+28=70
30*42+80*28=50(42+28)
simplify the equations
70=70
3500=3500
the ordered pair is a solution
so James needs 42 liters of 30% antifreeze and 28 liters of 80% antifreeze.
(42,28)
message me on ig for math help: eduardo.gti
Acid is 0.2*5 = 5* 1/5 = 1 liter. We should multiple mass and concentration (in this conditions). So, 1 liter.