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pochemuha
3 years ago
7

In quadratic formula

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
4 0

x² - x - 12 = 0


x = \dfrac{-b \pm \sqrt{b^{2} - 4ac}}{2a}


a = 1, b = -1, c = -12

x = \dfrac{1 \pm \sqrt{(-1)^{2} - 4(1)(-12)}}{2(1)}


x = 4 or -3


Answer: 4 or -3

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Which are correct statements regarding proofs? Select three options.
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In a paragraph proof, statements and their justifications are written in sentences in a logical order.

A two-column proof consists of a list statements and the reasons the statements are true.

A paragraph proof is a two-column proof in sentence form.

Step-by-step explanation:

  • In a paragraph proof, statements and their justifications are written in sentences in a logical order.
  • A two-column proof consists of a list statements and the reasons the statements are true.
  • A paragraph proof is a two-column proof in sentence form.

A paragraph proof is only a two-column proof written in sentences. However, since it is easier to leave steps out when writing a paragraph proof.

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8 0
3 years ago
Explain (1+y)^2 how does it turn into 1+2y+y^2 ? i don't understand
Greeley [361]
I will show you the steps on how you get that answer and if you have any questions after that let me know and I'd be more than happy to help answer them for you.
The first step for solving (1 + y)² is to use the equation (a + b)² = a² + 2ab + b² to expand the expression.
1² + 2 × 1y + y²
1 raised to any power equals 1,, so remove the power.
1 + 2 × 1y + y²
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1 + 2y + y²
Finally,, use the commutative property to reorder the terms.
y² + 2y + 1
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3 years ago
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When Jennifer went to bed, there was 4 3/4 inches of snow on the ground. When she woke up, there was 6 1/2 inches of snow on the
kodGreya [7K]

let inches of snow be x..

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3/4+x=6 1/2

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Convert 1/2 into similar denominator:

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Convert into mixed number:

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Answer:

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5 0
3 years ago
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