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
tester [92]
3 years ago
15

a student was given the equation x^2+6x-13=0 the next step in the students process was x^2+6x+c=13+c state the value of c that c

reates a perfect square trinomial explain how the value of c is determined
Mathematics
1 answer:
Ratling [72]3 years ago
4 0
This is the process of completing the square. 
Keep this equation in mind: ax^2+bx+c
Basically, to make this a perfect square trinomial, you take half of b and square that value. This will make it so you can compress the left side of the equation into (x+b)^2 \ or \ (x-b)^2 depending on the sign in the middle of the original equation.
You might be interested in
Two triangles have side lengths 3,4,5 and 6,____10, respectively. The triangles are similar to each other.
Sergeu [11.5K]

Answer:

8

Step-by-step explanation:

3,4,5 and 6,_,10 are similar. what do you notice between the two? 6 is twice of 3. 10 is twice of 5. so then 4 would be half of 8.

hope i helped ;)

8 0
3 years ago
You have a 5-question multiple-choice test. Each question has four choices. You don’t know any of the answers. What is the exper
Blababa [14]
5 questions each 4 choices guess 3 out of 5 correctly?

5*4=20    20/3=6.67   ,          My guess is that the outcome of you probably getting 3 / 5 correct is a 79.9 percent chance. 

3 0
2 years ago
Twelve less than 5 times a number is greater than or equal to 6 more than twice the number. Each inequality and number line repr
jenyasd209 [6]

Answer:  x ≥ 6

<u>Step-by-step explanation:</u>

12 less <u>than</u> 5 times a number ≥ 6 more <u>than</u> twice the number

                    5x - 12                    ≥                        2x + 6

Note: the word "than" switches the order of the terms.

5x - 12 ≥ 2x + 6

<u>-2x  +12</u>  <u>-2x +12 </u>

3x         ≥       18

<u>÷3         </u>     <u>    ÷3 </u>

   x         ≥       6

Graph: 6 -----------→   the dot is closed (filled in) since it is "equal to"

3 0
3 years ago
ok I'm bout to get to the point my mother hates people that don't are not straight and I'm bi so how do I come out to my mom and
Vlada [557]

Answer:

you should life make a cake and put frosting words on it that say I'm bi and i'm proud!

3 0
2 years ago
Read 2 more answers
If we are given x such that 25^x-9^y=18 and 5^x-3^y=3, compute 5^x+3^y.
leonid [27]

25 = 5*5 and 9 = 3*3, which we can exploit to write

25^x-9^y=(5^2)^x-(3^2)^y=5^{2x}-3^{2y}=(5^x)^2-(3^y)^2

so that this expression is actually a difference of squares. We can factorize this to get

(5^x-3^y)(5^x+3^y)=18

and given that 5^x-3^y=3, we divide both sides by this to get

5^x+3^y=\dfrac{18}3=\boxed{6}

7 0
2 years ago
Other questions:
  • Draw a point that shows the value of the 2020th dvddvd. label it 1. draw a point that shows the willingness to pay for the 1010t
    15·1 answer
  • Did I do this right help need to know now
    11·2 answers
  • "18 less than a number"
    8·2 answers
  • Please help asap!!!!!!!!!!!!!!!!
    6·1 answer
  • This school year, Alysson has already downloaded 123 assignments from her IPAD to her new Chromebook. These assignments have tak
    12·1 answer
  • Simplify the expression\(\frac{2x^{-1}y}{x^3z}\) for \(x=2\), \(y=8\), and \(z=-1\).
    12·2 answers
  • I need help with this<br>​
    11·2 answers
  • Need this for homework plz help me
    11·2 answers
  • A die is tossed 24 times and lands on 1 three times. Suppose it is tossed 160 times. Find
    15·2 answers
  • Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!