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yawa3891 [41]
3 years ago
6

Sianna bought 3 pens, 4 notebooks, and a calculator. The calculator cost $25. If x represents the cost of each pen and y represe

nts the cost of each notebook, which expression represents the amount of change Sianna should receive from $50?
*3x + 4y +25
*50 – (3x + 4y)
*50 – (3x + 4y + 25)
*3x + 4y + 25 + 50
Mathematics
2 answers:
kvv77 [185]3 years ago
8 0
The correct answer would be: 50-(3x+4y+25) because the sum of what's in parethese is what it cost Sianna to buy all of it.
torisob [31]3 years ago
5 0
50-(3x+4y+25) is the answer
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Step-by-step explanation:

<u><em>Explanation</em></u>:-

<u><em>Step(i):</em></u>-

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Let (x₁ , y₁) = ( 9, -9)

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<u>Step(ii)</u>:-

<em>The distance between the two points are </em>

    A B   =   \sqrt{(x_{2} - x_{1})^{2}+(y_{2} - y_{1})^{2}    }

    A B =   \sqrt{(10 - 1)^{2}+(-9 - (-9))^{2}    }

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 <em> AB    =  √81 = 9</em>

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The distance between the two given complex numbers = 9

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