x+y=10
x+2y=14
x is common in both so u have to subtract the second one from 1st
x-x + y-2y = 10-14
-y = -4
y=4
which means bottle of water (y) = 4
and then substitute 4 in equation (x+y=10 or x+2y=10)
x + 4 = 10
x=6
Answer: The answer is 4,256
Step-by-step explanation:
Answer:
492.99
Step-by-step explanation: x = amount invested at 12%
y = amount invested at 9%
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x + y = 20287
0.12x = 0.09y + 492.99
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put the system of linear equations into standard form
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x + y = 20287
0.12x - 0.09y = 492.99
Solution :
Assume that the diameter of the watch glass is 9.5 cm.
There are 10 drops of hexagon in 1 mL.
V = volume of hexagon in per drop = 
mL per drop
V = 0.1 mL per drop
N = number of drops to form phospholipid layer
N = 39 (assumed)
= volume of hexagon required to form phospholipid layer
= V x N
= 0.1 x 39
= 3.9 mL
Since 1 mL = 1 
∴ = 3.9
d = diameter of the watch glass = 9.5 cm
A = area of one molecule
