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Dafna1 [17]
3 years ago
15

What number must be added to the expression below to complete the square? x^2+x. a.1/4 b.1/2 c.2 d.1

Mathematics
1 answer:
torisob [31]3 years ago
3 0

Option a. 1/4 is the right answer

Step-by-step explanation:

Given expression is:

x^2+x

Here

we know that

a = x

In order to find the number which should be added

comparing with the formula

(a+b)^2 = a^2+2ab+b^2

2ab = x\\2.x.b = x\\b=\frac{x}{2x}\\b = \frac{1}{2}

So, we will add the square of 1/2 which is 1/4

Hence,

Option a. 1/4 is the right answer

Keywords: Expressions, polynomials

Learn more about polynomials at:

  • brainly.com/question/629998
  • brainly.com/question/6208262

#LearnwithBrainly

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Adrian has a points card for a movie theater.
ANEK [815]

Answer: v ≥ 6

This means that Adrian needs to do at least 6 visits.

Step-by-step explanation:

First, we know that he gets 20 points just for signing up, so he starts with 20 points.

Now, if he makes v visits, knowing that he gets 2.5 points per visit, he will have a total of:

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Now we can solve this for v, so we need to isolate v in one side of the equation:

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6 0
3 years ago
John ran 6 2/3 miles last week he ran 1 1/3 miles each day how many days did he run
Murljashka [212]

6\frac{2}{3} = \frac{3(6) + 2}{3} = \frac{20}{3} miles

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Answer: 5 days

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Answer:

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Step-by-step explanation:

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