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
eimsori [14]
2 years ago
9

Find a possible value of b. 5x2 - bx - 8​

Mathematics
1 answer:
pychu [463]2 years ago
3 0

Answer:

Step-by-step explanation:

Without more input from you, it's hard to find an exact value for b.  However, b may take on a large range of values.  b = 10 and b = -3 (chosen arbitrarily) are acceptable choices.

Take a look at the quadratic formula.  The discriminant is b^2 - 4ac.  There is nothing about this equation that restricts or forbids the use of any value of b.

You might be interested in
Using these complex zeros (1,1,-1/2,2+i,2-i) factor f(x)=-2x^5 +11x^4 -22x^3 +14x^2 +4x -5
Marianna [84]
\bf \begin{cases}
x=1\implies &x-1=0\\
x=1\implies &x-1=0\\
x=-\frac{1}{2}\implies 2x=-1\implies &2x+1=0\\
x=2+i\implies &x-2-i=0\\
x=2-i\implies &x-2+i=0
\end{cases}
\\\\\\
(x-1)(x-1)(2x+1)(x-2-i)(x-2+i)=\stackrel{original~polynomial}{0}
\\\\\\
(x-1)^2(2x+1)~\stackrel{\textit{difference of squares}}{[(x-2)-(i)][(x-2)+(i)]}

\bf (x^2-2x+1)(2x+1)~[(x-2)^2-(i)^2]
\\\\\\
(x^2-2x+1)(2x+1)~[(x^2-4x+4)-(-1)]
\\\\\\
(x^2-2x+1)(2x+1)~[(x^2-4x+4)+1]
\\\\\\
(x^2-2x+1)(2x+1)~[x^2-4x+5]
\\\\\\
(x^2-2x+1)(2x+1)(x^2-4x+5)

of course, you can always use  (x-1)(x-1)(2x+1)(x²-4x+5)  as well.
7 0
3 years ago
The distance between the points (5,-2) and (-7,3)
olchik [2.2K]
It would be (all under a big square root) (-7-5)squared + (3+2) squared. This equals to about root 169
7 0
3 years ago
finn the frog Brought a radio to the birthday party that was 9 inches tall, 8 inches long and 7 inches wide. What is the surface
Oduvanchick [21]

Answer:

504

Step-by-step explanation:

6 0
3 years ago
A sample of 100 college students is selected from all students registered at a certain college, and it turns out that 38 of them
nasty-shy [4]

Answer:

a.   False

b. True

Step-by-step explanation:

Given that:

The sample size of the college student n = 100

The population of student that participated p = 38

We are to identify from the following statement if it is true or false.

From part a;

It is false since the random samples not indicate the population perfectly. As such we can't conclude that the proportion of students at this college who participate in intramural sports is 0.38.

The statement in part b is true because the sampling variation, random samples also do not indicate the population perfectly but it is close to be 0.38. Thus, it is suitable to conclude that the proportion of students at this college who participate in intramural sports is likely to be close to 0.38, but not equal to 0.38.

7 0
3 years ago
Solve: x + 1.5= 5.7<br> How do I solve this?
Mashutka [201]

Answer:

4.2

Step-by-step explanation:

5.7-1.5=4.2

4 0
3 years ago
Read 2 more answers
Other questions:
  • 2z -5(z +2) = -8 - 2z<br><br> Please explain!! Thank you
    6·1 answer
  • Cost to store: $45 markup: 35% what would be the selling price?
    11·1 answer
  • If a truck gets 14 mile to the gallon on average, how much does carbon dioxide is emitted into the atmosphere when the truck tra
    13·2 answers
  • chang has 2 shirts: a white one and a black one. he also has 2 pairs of pants, one blue and one tan. what is the probability, if
    9·2 answers
  • What does the square root of 3 plus the square root of 3 give you?
    8·1 answer
  • I'm too dumbo to answer this, can anyone help?​
    12·1 answer
  • 22 .Siswa dapat menganalisis persamaan menggunakan identitas trigonometri
    9·1 answer
  • Whole numbers greater than 10 but less than 15​
    12·2 answers
  • Do all 4 pls it is easy
    5·1 answer
  • Help me with this please.......
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!