Question 1 is C and question 2 is A
Answer:
A typical mixture equation
:
x + .10(54-x) = .20(54)
x + 5.4 - .10x = 10.8
x - .1x = 10.8 - 5.4
.9x = 5.4
x = 5.4%2F.9
x = 6 L of pure acid to be combined with: 54-6 = 48 L of 10% solution
Step-by-step explanation:
does this help?
Answer: 235,000,000
Step-by-step explanation:
y + (2x -12) = 180 (since they are supplementary angles)
(2x-12) = 96 ( since they are alternate exterior angle)
2x = 96 + 12
2x = 108
x = 108/2
x = 54.
y+( 2x-12)=180
y+(2× 54 -12) = 180
y + (108-12) = 180
y + 96 = 180
y= 180-96
y = 84.
ratio is 3:5; 3 + 5 = 8
32/8 =4
so boys: 3*4 =12
girls: 5*4 = 20
boys to girls is 3:5 = 12:20
