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Ksivusya [100]
3 years ago
8

For y=4x-3, find the

Mathematics
1 answer:
Viktor [21]3 years ago
5 0

Answer:

X=5

Step-by-step explanation:

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Consider the basis B of R2 consisting of vectors
adelina 88 [10]

The idea is to find a linear combination a_1(5, -6) + a_2(-2, -2) = (-6, 2) It boils down to a system of equations: Take the augmented matrix:

<span>[<span><span>5<span>−6</span></span><span><span>−2</span><span>−2</span></span><span><span>−6</span>2</span></span>]</span> Reduced form: <span>[<span><span>10</span><span>01</span><span><span>−<span>811</span></span><span>1311</span></span></span>]</span> -(8/11)*(5, -6) + (13/11)*(-2, -2) = (-6, 2)

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3 years ago
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<span>Levant traded 270 american dollars and received 3000 Mexican pesos. This means that:
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3 years ago
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The cost of 2 ounces of pure gold was $2,640. How much did it cost for 1 ounce of pure gold?
sergeinik [125]

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-4x\geq8\\&#10;x\leq-2
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Which ordered pair is a solution to this equation?
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Let's test each alternative :

2 x - 9 y = 38      ( 7,5 ) :

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14 - 45  = 38

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( 4 , - 1 ) :

( 2 * 4 ) - ( 9 * ( - 1 ) =  38

8 + 9  = 38

17 ≠ 38  ( wrong )

( 3 , - 3 ) :

2 * ( 3 ) - ( 9 * ( - 3 ) = 38

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2* ( 1 ) - 9 * ( - 4 ) = 38

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38 = 38    ( Correct alternative )

( 1 , - 4 ) is correct alternative


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3 years ago
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