All categories

3 years ago

What number should be added to the expression x^2 + 12x to change it into a perfect square trinomial? Is 36 correct?

Mathematics

1 answer:

galben [10]3 years ago

3 0

$x^{2} +12x+n^2 = x^{2} +2*6*x+n^2 \Rightarrow n=6. \\ \\ The~answer~is~36. \\ x^{2} +12x+36=(x+6)^2/$

You might be interested in

What is the difference of the polynomials?

Vilka [71]

Answer:

$8r^6s^3-5r^5s^4+r^4s^5+5r^3s^6$

Step-by-step explanation:

We want to simplify;

$(8r^6s^3-9r^5s^4+3r^4s^5)-(2r^4s^5-5r^3s^6-4r^5s^4)$

We expand the bracket to obtain;

$8r^6s^3-9r^5s^4+3r^4s^5-2r^4s^5+5r^3s^6+4r^5s^4$

We now group the like terms to obtain;

$8r^6s^3-9r^5s^4+4r^5s^4+3r^4s^5-2r^4s^5+5r^3s^6$

We now simplify to get;

$8r^6s^3-5r^5s^4+r^4s^5+5r^3s^6$

The correct answer is C

3 0

3 years ago

Read 2 more answers

12. Martina rents a room in her home to guests. She charges a $25 flat fee per night for one person. Additional guests are welco

gtnhenbr [62]

Answer:

Step-by-step explanation:

the answer is A

BECAUSE the fixed charged or the charged that is always there is 25 dollars plus and additional cost for 10 dollars per person plus additional cost depending on how many hours u stay past 10 am

6 0

3 years ago

Read 2 more answers

When the input of the function is -4 what is the output of the function

IceJOKER [234]

Answer:

The output is 5

Step-by-step explanation:

-4 is the input (x value). To find the output, you have to find where -4 is on the line. -4 is on the line when 5 is the y coordinate (output).

8 0

2 years ago

Pls help I can't do anything I will give the brain thingy

Sidana [21]

Step-by-step explanation:

Blank C :

Given total = 68

No. of TV news = 13

Therefore, in Internet it would be = Total - TV news

= 68 - 13 = 55 (ans)

Blank D :

No. of Internet news in 7th grade = 55

No. of Internet news in 8th grade = 64

Hence, total Internet base news = 64 + 55 = 119 (ans)

Blank B :

All total = 138

Internet news total = 119

Hence, TV news total = All total - Internet news

= 138 - 119 = 19 (ans)

Blank A :

No. of TV news in 7th grade = 13

Total news in TV = 19

Therefore, no. of TV news in 8th grade = 19 - 13 = 6(ans)

Blank E :

All total = 138

Total of 7th grade news = 68

Hence, total of 8th grade news = 138 - 68

= 70 (ans)

6 0

3 years ago

The next 10 months Colin wants to save $900 for his vacation he plans to save $75 each of the first eight months how much must h

Makovka662 [10]

$300 because 300x2=600 then 75x8=300 and 600+300=900

5 0

3 years ago