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nasty-shy [4]
3 years ago
11

If using the method of completing the square to solve the quadratic equation x2 - 6x – 7 = 0, which number would have to be adde

d to "complete the square"?​
Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0

Answer:

(-3)^2

Step-by-step explanation:

You add 7 on both sides, giving you x^2 - 6x = 7

Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7

The answer will be (-3)^2 for this question, but this is not the full solution.

Hope this helped. Good luck on the rest!

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Lisa [10]

Answer:

-2k + 6

hope its right

-2k - (-5) + 1                    

You should always switch the signs to their opposites if you're mutiplying a negative such as the - (-5)     Hope I make sense

-2k + 5 + 1

-2k + 6

4 0
3 years ago
So,some please help!
Leni [432]
4.6 is the correct answer. Hope I helped:)
5 0
3 years ago
Read 2 more answers
A boutique prices merchandise by adding 80% to its cost. It later decreases by 25% the price of items that do not sell quickly
Darya [45]
A. Write a function f(x) to represent the price after the 80% markup. 
<span>b. Write a function g(x) to represent the price after the 25% markdown. </span>
<span>c. Use a composition function to find the price of an item after both price adjustments that originally costs the boutique $150. </span>
<span>d. Does the order in which the adjustments are applied make a difference? Explain. 
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answers 

 <span>a) f(x) = 1.8x 

b) f(x) = 0.75(1.8x) 

c) f(150) = 0.75(1.8(150) = $202.50 

d) No, it doesn't matter. The result is the same.
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3 years ago
2. Which of the following is true of liquids? * AThey take on the shape of their container. b.Their shape does not change. C.The
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Answer:

A

Step-by-step explanation:

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Answer:

  1. 한차례ㅎ츟ㅎ츟
  2. <em><u>ㅗ어ㅐ더랴ㅜㄷ</u></em><em><u>ㅛ오ㅔ</u></em>
  3. <em><u>ㅎ요유ㅛㅇ</u></em>
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