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rosijanka [135]
3 years ago
5

Mira has breakfast at a restaurant. She leaves a 20% tip of $1.80.

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

let's say the breakfast price was "x", so that's the 100%, and we know she gave 20% of that and that is 1.80.

so, 1.80 is 20%, and "x" is the 100%, what is "x"?

\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 1.80&20\\ x&100 \end{array}\implies \cfrac{1.80}{x}=\cfrac{20}{100}\implies \cfrac{1.8}{x}=\cfrac{1}{5} \\\\\\ 9.0=x\implies 9=x

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Answer:

x-intercept = 3

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Step-by-step explanation:

The intersection of the line with the x-axis is known as the x-intercept and it's calculated by making y = 0.

Also, the intersection of the line with the y-axis is known as the y-intercept and it's calculated by making x = 0.  

<u>Given the following data;</u>

Equation of straight line is y = 2x - 6

To find the intersection;

<em>When y = 0, the equation crosses the x-axis. </em>

y = 0;

<em>Substituting into the equation, we have;</em>

0 = 2x - 6

2x = 6

x = 6/2 = 3

x = 3

(x, y) = (3, 0) on the x-axis.

<em>When x = 0, the equation crosses the y-axis. </em>

x = 0;

<em>Substituting into the equation, we have;</em>

y = 2(0) - 6

y = 0 - 6

y = -6.

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<em>Therefore, the coordinates of the intersection of the graph is (3, 0) and (0, -6). </em>

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3 years ago
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gregori [183]

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