42, because 50% or 1/2 of 28 is 14. Increasing it would be addinng it to the original number so 28+12=42
Answer: x = 2 sqrt(3)
Explanation:
x = 6/sqrt(3)
Rationalize denominator
x = 6 x sqrt(3)/sqrt(3) x sqrt(3)
x = 6 sqrt(3)/3
x = 2 sqrt(3)
Answer:
30 ml of 45% salt solution and 20 ml of 30% salt solution.
Step-by-step explanation:
Let x be the amount of 45% salt solution and y be the amount of 30% salt solution
the two equation will be:
x+y=60 -- A
0.45x+0.3y=0.4(60) -- B
Solve by substitution
Rewrite Equation A
x+y=60
x=60-y --- C
Substitute C into B
0.45(60-y)+0.3y=24
27-0.45y+0.3y=24
-0.15y=-3
y=20
<u>Substitute</u> the y=20 into equation C
x=60-20
x=30
Therefore, there was 30 ml of 45% salt solution and 20 ml of 30% salt solution.
The total area of this polygon would be 14 yards squared.
The two lower rectangles both have an area of 3 yards squared. (Total of 6 yards squared)
The top rectangle has as area of 8 yards squared.
When you add these together you have a total of 14 yards squared.
Hope this helps and have a nice day! :)
