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Vedmedyk [2.9K]
3 years ago
5

A pencil and an eraser cost € 1.40 (total cost).

Mathematics
1 answer:
Over [174]3 years ago
7 0

Answer:

Eraser cost €0,2

Step-by-step explanation:

Cost of ereaser - x

Cost of pencil - x + 1

x + x + 1 = 1,4

2x + 1 = 1,4

2x = 0,4

x = 0,2

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3 years ago
Determine the coordinates of the vertex for each quadratic function and whether the parabola has a maximum or minimum. 4. y = x²
GREYUIT [131]

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\sf y =x^2 +6x-2

x coordinates on vertex:

<u>solving steps</u>:

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<u>Find y-coordinate on vertex:</u>

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\mathrm{If}\:a < 0,\:\mathrm{then\:the\:vertex\:is\:a\:maximum\:value}

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2 years ago
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