Mathematics
08.02.2021 18:08
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The point (5,-1) is the solution for which linear system? 5x+4y=29 2xβˆ’8y=25 x plus

The point (5,-1) is the solution for which linear system? 5x+4y=29
2xβˆ’8y=25 x plus 4 y is equal to 29, , 2 x minus 8 y is equal to 2,

9xβˆ’3y=3
y=βˆ’1+3x9 x minus 3 y is equal to 3, , y is equal to negative 1 plus 3 x,

5xβˆ’4y=29
2x+8y=25 x minus 4 y is equal to 29, , 2 x plus 8 y is equal to 2,

5xβˆ’y=βˆ’3
15xβˆ’3y=βˆ’95 x minus y is equal to negative 3, , 15 x minus 3 y is equal to negative 9,
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kbruner20
kbruner20
4,5(20 marks)

$120

Step-by-step explanation:

Zero pair is a pair of numbers whose sum is zero, e.g. +5, -5. Assigning a negative value to expenditures, Ingrid spent money represents $-120. From the definition, it is deduced that $120 make the zero pair in this case. So, she must earn $120.

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