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Katyanochek1 [597]
4 years ago
7

Use the discriminant to determine the number of solutions. x2 + x = 12

Mathematics
1 answer:
Natasha2012 [34]4 years ago
6 0
4 is the answer because 4x2 plus 4 equals 12
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Its 45 because the triangle has to be 180 and there is a 90 degree angle in the square so 90 divided by two is 45 

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Please help me, i'll give brainliest
Ann [662]

Answer:

x=29

Step-by-step explanation:

The overpass and the two lanes form two angles: 4x and 2x+6.

If the lanes are parallel, then the two angles are same side interior angles. Therefore, they must add to 180 degrees.

Let’s add the two angles and set them equal to 180.

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First, combine like terms. 4x and 2x are both terms with a variable, so they can be combined.

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6x+6=180

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6x/6=172/6

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When x=29, the same side interior angles are supplementary and the lanes are parallel.

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