Answer:
60 ml of 40% saline and 90 ml of 15% saline
Step-by-step explanation:
We can call the amount of 40% solution x and the amount of 15% solution y.
x + y = 150 -- (1)
0.40x + 0.15y = 150 * 0.25 -- (2) --- 150 * 0.25 = 37.5
40x + 15y = 3750 (Multiply (2) by 100 to get rid of decimals)
15x + 15y = 2250 -- (3) (Multiply (1) by 15)
25x = 1500 (Subtract (3) from (1)
x = 60
y = 150 - 60 = 90
You need to make the bottom fraction a common multiple !!
Answer:
(7/3, -1). 7/3 is the missing coordinate.
Step-by-step explanation:
Plug in -1 for y. You get:
3x+4=11.
Subtract 4 on each side:
3x=7
Divide each side by 3:
x=7/3
A proof should contain:
The diagram
The givens
Prove statement
reason column
statement column
