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Usimov [2.4K]
3 years ago
9

what number should be added to the expression x^2 + 10x to change it into a perfect square trinomial?​

Mathematics
2 answers:
Tamiku [17]3 years ago
6 0

Answer:

25

Step-by-step explanation:

In case anyone was confused the answer is 25. took the test.

Annette [7]3 years ago
3 0

Answer:

\large\boxed{5^2=25}

Step-by-step explanation:

\text{Perfect square:}\ (a+b)^2=a^2+2ab+b^2\\\\x^2+10x\\\Downarrow\\x^2+2(x)(5)\\\Downarrow\\x^2+2(x)(5)+5^2=(x+5)^2

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Find all of the points on the x-axis which are 6 units from the point (−1, 1).
anyanavicka [17]
All the points that are 6 units from (-1, 1) are those on the circle
  (x+1)^2 +(y-1)^2 = 36

For y=0, the two points of interest satisfy
  (x+1)^2 +1 = 36
  (x+1)^2 = 35 . . . . . . subtract 1
  x+1 = ±√35
  x = -1±√35

The points you seek are (-1-√35, 0) and (-1+√35, 0), about (-6.916, 0) and (4.916, 0).

5 0
3 years ago
B + 4 = 2b - 5 <br> B= ??
Sergio039 [100]

Answer:

B=9

Step-by-step explanation:

b+4=2b-5

b-2b+4=-5

b-2b=-5-4

-b=-5-4

-b=-9

b=9

6 0
2 years ago
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Anybody knows the answer?
soldi70 [24.7K]

Hey!


RS = 15 and RT = 18. Subtract 18 from 15 to get your answer.


18 - 15 = 3


<em>That means your answer is 3</em>


\framebox{Answer = 3}

8 0
2 years ago
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I need help with thisss
Yanka [14]
I believe the answer is 18, because 5x3=15, so we can only assume that N is 6x3=18.
5 0
3 years ago
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PLease help please i need helo on this
ankoles [38]

Answer:

315

Step-by-step explanation:

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