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Nutka1998 [239]
3 years ago
11

Solve each system of linear Equations x+y=5 x-3y=3

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0
X+y=5     y=5-x

x-3y=3
x-3(5-x)=3
x-15+3x=3
4x=18
x=4.5

y=5-x
y=0.5

check
x+y=5          4.5+0.5=5
x-3y=3         4.5-1.5=3
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Answer:

The answer is below

Step-by-step explanation:

Let Q represent the amount of salt in the tank at time t.

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Integrating:\\\\A(100-t)^{-4}=-2(100-t)^{-3}+c\\\\A=-2(100-t)+\frac{c}{(100-t)^{-4}} \\\\at, t=0,A=0\\\\0=-2(100-0)+\frac{c}{(100-0)^{-4}}\\\\c=0.02\\\\A=-2(100-t)+\frac{0.02}{(100-t)^{-4}}

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