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
WITCHER [35]
2 years ago
12

What value of c makes the polynomial below a perfect square?

Mathematics
2 answers:
schepotkina [342]2 years ago
7 0
81/4
Because I found the answer by using a Calculator I found online
malfutka [58]2 years ago
6 0

Answer:

B

Step-by-step explanation:

x² + 9x

to complete the square

add ( half the coefficient of the x- term )² to x² + 9x

= x² + 2(\frac{9}{2} )x + (\frac{9}{2} )²

= x² + 9x + \frac{81}{4} ← the value of c

= (x + \frac{9}{2} )² ← a perfect square

You might be interested in
Find the output value of the function. f(x)=5x-8 for f(7)
Molodets [167]

Answer:

27

Step-by-step explanation:

f(x) = 5x - 8

f(7) = 5(7) - 8 = 27

3 0
3 years ago
Read 2 more answers
Please help (20 points)
Evgesh-ka [11]

35.\\V=\dfrac{\pi r^2h}{3}\ \ \ \ |\cdot3\\\\3V=\pi r^2h\ \ \ \ |:\pi r^2\\\\\boxed{h=\dfrac{3V}{\pi r^2}}

36.\\V=150\ m^3\\r=5\ m\\h=?\\\\\text{substitute}\\\\h=\dfrac{3\cdot150}{\pi\cdot5^2}=\dfrac{450}{25\pi}=\dfrac{18}{\pi}\approx\dfrac{18}{3}=6\ m\\\\Answer:\ The\ height\ is\ greater\ than\ a\ radius.

8 0
3 years ago
Agatha is five times older than her son bob. three years ago she was nine times older. how old is agatha?
Naya [18.7K]
Write an equation system based on the problem
"Agatha is five times older than her son, Bob" could be written as:
  a = 5b.......(first equation)
"Three years ago, she was nine times older" could be written as:
  a - 3 = 9(b - 3)......(second equation)

Solve the equation system
To find the value of b, substitute 5b as a to the second equation
a - 3 = 9(b - 3)
5b - 3 = 9(b - 3)
5b - 3 = 9b - 27
5b - 9b = -27 + 3
-4b = -24
   b = -24/-4
   b = 6
Her son, Bob, is 6 years old

To find Agatha's age, substitute the value of b to the first equation
a = 5b
a = 5 × 6
a = 30
Agatha is 30 years old
4 0
3 years ago
Asap pleaseeeee Name a point that lies only on the y-axis?
maxonik [38]

Answer:

(0,1)

Step-by-step explanation:

hope this helps !

could u check out my recent question I asked no one has helped me and I'm stuck and I'm also kinda slow . pleaseee

5 0
3 years ago
Read 2 more answers
Kyle's father is 67 ft. tall. Kyle is 5 feet tall. How many times taller is Kyle's father than him?​
MrRissso [65]

Answer:

13.5

Step-by-step explanation:

to find the answer you divide 67 and 5 and get 13.5. to check your answer, you can do 13.5 x 5 and get 67 because 67 is 13.5 times 5. why is kyles dad so tall though..

5 0
2 years ago
Other questions:
  • Amelia wants to paint three walls in her family room. Two walls are 26 feet long by 9 ft wide. What is the total area of the wal
    10·1 answer
  • What is the meaning of babalawo​
    7·2 answers
  • What is the slope of a line parallel to (y=-3x-6)?
    13·1 answer
  • Everyday,Tobys burrito stand uses 3 bags of tortillas, for how many days will2/3 of a bag of tortillas last​
    10·2 answers
  • A common denominator is when the denominators of two or more fractions are the same. true or false?
    9·1 answer
  • 3x - 3y = -3<br>2x - y = -5​
    5·1 answer
  • The local drugstore is offering 15% off the normal price for a 16-pack of AAA batteries. If a 16-pack of AAA batteries is normal
    11·1 answer
  • the area of a square whose sides have length x cm is increasing at the rate of 12cm²/s. how fast is the length of a side increas
    10·1 answer
  • I need help i got confused after 3 of these
    9·1 answer
  • WILL MARI BRAINLIEST HELP PLS<br><br> what key features do f(x) and g(x) have in common?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!