Need help i dont get it So please help me

Mathematics

1 answer:

aliina [53]3 years ago

5 0

Confusing.....!!!! sorry

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Find in simplest radical form, the length of the line segment with endpoints whose coordinates are (-1,4) and (3,-2)?

stiks02 [169]

$d = \sqrt{(x_2 - x_1)^{2} + (y_2 - y_1)^{2}} \\d = \sqrt{(3 - (-1))^{2} + (-2 - 4)^{2}} \\d = \sqrt{(3 + 1)^{2} + (-6)^{2}} \\d = \sqrt{(4)^{2} + 36} \\d = \sqrt{16 + 36} \\d = \sqrt{52} \\d = 2\sqrt{13}$

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$\left\{\begin{array}{ccc}y=6x+4&(1^o)\\y=4x-2&(2^o)\end{array}\right\\\\\\subtitute\ (1^o)\ to\ (2^o):\\\\6x+4=4x-2\ \ \ \ |subtract\ 4\ from\ both\ sides\\6x=4x-6\ \ \ \ |subtract\ 4x\ from\ both\ sides\\2x=-6\ \ \ \ |divide\ both\ sides\ by\ 2\\\boxed{x=-3}\\\\subtitute\ value\ of\ "x"\ to\ the\ (1^o):\\y=6(-3)+4=-18+4\to \boxed{y=-14}$

$Answer:\boxed{ \left \{ {{x=-3} \atop {y=-14}} \right}$

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Randy can buy 6 gallons of gas for $18 or 7 gallons of gas for $21. How much do you think he would pay for 8 gallons of gas? A)

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Well, we want to find how much it would cost for 1 gallon, the easiest way to do that is subtract 21 from 18.

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Is that x for you to multiply or is that a variable.

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Answer:0

Step-by-step explanation:

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