1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zloy xaker [14]
3 years ago
7

What number must you add to the expression below to complete the square? x^2-20x?

Mathematics
1 answer:
polet [3.4K]3 years ago
5 0
We have that
x²<span>-20x
</span><span>Group terms that contain the same variable
</span>(x²-20x)
Complete the square 
(x²-20x+10²)------> (x-10)²

the answer is
the number must be 100
You might be interested in
Write a slope intercept form of a linear equation and label what each part represents
luda_lava [24]
Y=mx+b

mx=slope
b=the y intercept
y= value of y in this equation

8 0
4 years ago
Let f(x) = x^2 + 6 and g(x) = x+8/x . Find ( g o f)(­ -7)
faust18 [17]
One way to approach this is to find (g o f)(x) first and then to replace x by -7:

g( f(x) ) = (x^2+6) + 8/(x^2+6)

Now replace x with -7.  We get:    ( g o f )(-7) = 49+6+8 / (49+6), or
                                                                        = 55 + 8 / 55, or 55 8/55 (ans.)
4 0
3 years ago
Read 2 more answers
...................Simplify 43.45
Evgesh-ka [11]

Answer:

9.31st 91 35 5789 400th

Step-by-step explanation:

43.45+567=

9.3

8 0
3 years ago
Read 2 more answers
20 POINTS<br> urgent help due in 5 minutes.
inna [77]

Answer:

56548.67/942.47=60.0005

so 60 times

Step-by-step explanation:

8 0
3 years ago
2 litres of lemonade costs £2.60. Find the cost of 6 litres of lemonade
Elena L [17]

Answer:

£7.80

Step-by-step explanation:

Since you multiply 2 by 3 to get 6, we are going to multiply 2.6 by 3

2.6 x 3 = 7.8

Thus the cost of 6 litres of lemonade is £7.80

7 0
3 years ago
Other questions:
  • In a race in which five automobiles are entered and tehre are no ties, in how many ways can the first three finishers come in/
    12·2 answers
  • In which number does the digit 8 have a value that is 1/10 times as great as the digit 8 in the number 2,980.7?
    15·2 answers
  • Name two pairs of supplementary angels in the figure below please help ASAP
    5·1 answer
  • What is the simplified form of 3/4x+3+21/8x^2-14x-15
    14·1 answer
  • Jonathan finds 52 cents in his car consisting of pennies, nickels, and dimes. He finds 2 more nickels than dimes, and three time
    10·1 answer
  • Help help , please help!! Giving brainliest if correct . The x-values in the table for f(x) were multiplied by -1 to create the
    10·1 answer
  • What is an equivalent expression for 4y plus y
    11·1 answer
  • What would be a correct expression for 0 ?<br> SELECT ALL THAT APPLY
    8·1 answer
  • How do I find the perimeter of this triangle?
    13·2 answers
  • Geometry help can someone please explain
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!