Put a dot on the 3 on the X-axis. (0,3)
Answer:
x=.1460
Step-by-step explanation:
ln5^(2x+1)=ln8
2x+1ln5=ln8
2x+1=(ln8/ln5)
x=((ln8/ln5)-1)/2
X=10
Step-by-step explanation:
(10-5)^2= (5)^2= 25
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.
