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VARVARA [1.3K]
3 years ago
10

Rewrite the equation by completing the square. f (x) = x^2 + 20x - 86

Mathematics
1 answer:
9966 [12]3 years ago
7 0

Answer:

f(x) = (x+10)^2 - 86

Step-by-step explanation:

  1. f(x) = x^2 + 20x - 86
  2. f(x) = x^2 + 20x + 100 - 86 (because (20/2)^2 = 100)
  3. f(x) = (x+10)^2 - 86

Completing the square means you do (b/2)^2 where b is: a^2x + bx + c.

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Someone please help! ATTACHMENT (just the circled one)
Elza [17]

4 (3x+9)-3(5y+7) =11

distribute

12x +36 -15y -21 =11

12x -15y +15 =11

subtract 15 from each side

12x -15y =-4

subtract 12x from each side

-15y= - 12x-4

divide by -15

y = -12/-15 x -4/-15

y = 4/5 x  + 4/15

slope = 4/5

y intercept = 4/15

6 0
3 years ago
What is they sum of 8/10 and 2/100
o-na [289]
8/10 + 2/100 = 80/100 + 2/100 = 82/100.

Hope this helps !

Photon
3 0
3 years ago
For all x, 5-3(x-4)=
velikii [3]

Simplify

Let's simplify step-by-step.

x(5)−3(x−4)

Distribute:

=x(5)+(−3)(x)+(−3)(−4)

=5x+−3x+12

Combine Like Terms:

=5x+−3x+12

=(5x+−3x)+(12)

=2x+12

Answer:

=2x+12

8 0
3 years ago
The table below shows the number of restaurants advertisement in a city directory.
Mnenie [13.5K]
8 + 13 + 14 + 7 = 42

Chinese = 8/42
Simplified = 4/21
7 0
3 years ago
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Thepotemich [5.8K]

The Choice D is the best answer by the passage because it most clearly and concisely combines the sentences using the correct punctuation. This choice eliminates unnecessary words, and the commas are placed correctly between the clauses.

According to the statement

we have to find that the out of given options which is correct for replace the words in the passage.

So, For this purpose, we know that the

In the passage ,

Choice A is incorrect because the phrase “the result being that it” is wordy and could be replaced with the single word “which.” Choice B is incorrect because the words “algal blooms cause oxygen depletion” need not be repeated. Choice C is incorrect because there is unnecessary repetition of the words “oxygen depletion” and “algal blooms.”

So, The Choice D is the best answer by the passage because it most clearly and concisely combines the sentences using the correct punctuation. This choice eliminates unnecessary words, and the commas are placed correctly between the clauses.

Learn more about passage here

brainly.com/question/12555695

#SPJ4

7 0
1 year ago
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