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3 years ago

Find the measure of y. 145° 130° 129° 134°

Mathematics

1 answer:

postnew [5]3 years ago

5 0

<h2>★<u>Answer</u></h2>

As We know a <u>heptagon</u> has <u>7 sides</u><u>.</u> So , we take the hexagon's sum of interior angles and add 180 to it getting us, 720+180=900 degrees.

⇢ 129° + 116 °+ 120° +130° + 135 °+ 125° + y = 900°

⇢755° +y = 900°

⇢y = 900 °- 755°

⇢y = 145°

<h2>Hence, The Answer is <u>145°</u></h2>

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Answer: False

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Explanation:

I'll use x in place of p.

The original equation 10x^2-5x = -8 becomes 10x^2-5x+8 = 0 after moving everything to one side.

Compare this to ax^2+bx+c = 0

We have

a = 10
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Plug those three values into the discriminant formula below

d = b^2 - 4ac

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d = 25 - 40*8

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The discriminant is negative, which means we have no real solutions. If your teacher has covered complex or imaginary numbers, then you would say that the quadratic has 2 complex roots. If your teacher hasn't covered this topic yet, then you'd simply say "no real solutions".

Either way, this quadratic doesn't have exactly one solution. That only occurs when d = 0. Therefore, the original statement is false.

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