Can someone help me with this? Im stuck i don't get it.

Mathematics

1 answer:

Greeley [361]3 years ago

5 0

You could use percentages to get your answer, first divide:

12 / 20 = .6

This means 60% grew

So if we assume that holds, 60% of the 10 will grow:

10 * .6 = 6

So 6 more should grow

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Assuming you meant is $- \frac{3}{5} x+ \frac{1}{5} \ \textgreater \ 720$

The answer would be :
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Photon

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3 years ago

Using Cramer’s Rule, what is the value of x in the system of linear equations below? x+3y=16 3x+y=8

alexdok [17]

Cramer's rule works as follows:
x+3y=16
3x+y=8
Then
x=Dx/D
y=Dy/D
where Dx,Dy,D are 2x2 matrices formed from of coefficients and right hand side.
D=
1 3
3 1
=1-9=-8
Dx=matrix D with first column replaced by the vector [16,8]=
16,3
8 1
=16-24
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Dy=matrix D with second column replaced by the vector [16,8]=
1 16
3 8
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Therefore
x=-8/-8=1
y=--40/-8=5

Check:
x+3y=1+3(5)=16
3x+y=3(1)+5=8 ok.

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3 years ago