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Sonja [21]
3 years ago
13

maria saves $25.00 a month and her sister Luisa saves $37.50 a month. How many months will it take for Luisa to save exactly $10

0.00 more than maria? ❗️Explain❗️
Mathematics
1 answer:
damaskus [11]3 years ago
3 0
37.50 -25.00= 12.50 so Luisa makes 12.50 more a month than Maria. Divide 100/12.5 = 8. It will take Maria 8 months to be exactly $100 ahead of Luisa.
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(5 , 7)

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then we have to solve the following system

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we proceed by Substitution:

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14.5a + 9c = 135.5

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amid [387]

Answer:

The equation of the line is 2 x - y + 5 = 0.

Step-by-step explanation:

Here the given points are A( 1, 7) & B( -3, - 1) -

Equation of a line whose points are given such that

( x_{1}, y_{1} ) & ( x_{2}, y_{2} )-

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i.e. <em> y - 7= \frac{- 1 - 7}{ -3-1}  ( x- 1)</em>

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<em>       y - 7 =  2 ( x - 1) </em>

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Hence the equation of the required line whose passes trough the points ( 1, 7) & ( -3, -1)  is 2 x - y  + 5 = 0.

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mamaluj [8]
X + y + z = 2
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cancelando +y com -y:

x + z = 2*(-5)
x + 5z = 6

-5x -5z = -10
...x +5z = 6
---------------------
-4x = -4 *(-1)
4x = 4
x = 4/4
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x + z = 2
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x + y + z = 2
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y = 2 - 2
y = 0 

S: {x, y, z} = {1, 0, 1}


8 0
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