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
Helen [10]
3 years ago
12

Please help!!!!!!!!!!

Mathematics
1 answer:
Delicious77 [7]3 years ago
5 0

f(x)=2x^2-4x+1

Substitute the values of x to the equation of the function f:

x=-1\to f(-1)=2(-1)^2-4(-1)+1=2(1)+4+1=7\\\\x=2\to f(2)=2(2^2)-4(2)+1=2(4)-8+1=1

Therefore we have two points (-1, 7) and (2, 1).

We can calculate the slope of line l.

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

Substitute:

m=\dfrac{1-7}{2-(-1)}=\dfrac{-6}{3}=-2

<h3>Answer: A) -2.</h3>
You might be interested in
Can some one help me find x?
Gnom [1K]

Answer:

x = 20

Step-by-step explanation:

Exterior angles are equal.

7x - 3 = 6x + 17

Add 3 and subtract 6x to both sides.

x = 20 is the answer.

4 0
2 years ago
Read 2 more answers
Which of these equations have no solution? Check all that apply.
dlinn [17]
First one simplifies to 2x + 6 = 2x + 7  which can't be true   so this one has No Solution.
Same applies to the second equation  ( 5x + 15 = 5x - 15) No solution

also the last one has no solution because it simplifies to  4x + 20 = 4x + 19
6 0
3 years ago
How to solve X - 1v+ 4 + 7y - 3
Nostrana [21]
The first step to solving this is to remember our mathematical rules. They state that when the term has a coefficient of -1,, the number doesn't have to be written but the sign needs to remain. This will change the expression to the following:
x - v + 4 + 7y - 3
Now subtract the numbers 4 and 3 from each other.
x - v + 1 + 7y 
Since this expression cannot be simplified any further,, the correct answer to your question would be x - v + 1 + 7y.
Let me know if you have any further questions.
:)
3 0
2 years ago
What is the slope-intercept from equation of the line that passes through (5,7)and(8,22)?
elena55 [62]

y=5X+32

I hope this helps!

6 0
2 years ago
Worth 33 points each!!
gogolik [260]

Where <em>x </em>is the number of books sold, <em>i </em>is income, and <em>c </em>is cost:

<em>c = 4x + 3500 </em> ($4 per book plus the 3500 flat marketing fee)

<em>i = 15x </em>($15 per book)

You are looking for the point where these intersect: the intersection is where the income is equal to the cost, and at any point after that the income is greater than the cost. So, set the equations equal to each other:

<em>4x + 3500 = 15x     </em>

subtract 4x from both sides

<em>3500 = 11x</em>              

divide both sides by 11

<em>x = 318.181818</em>

So, you would have to sell a minimum of 319 books in order to make a profit.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the quadratic equation. z^2+16z+44=0
    6·1 answer
  • Peter attends 6 lessons each week . A year he attends 52 weeks. But he missed 5 classes how many lessons did he attend during th
    13·1 answer
  • Find the 8th term of the geometric sequence. An=-2.5•4^n-1
    14·1 answer
  • Bill reads 1/5 of a book on Monday he reads 2/3 of the book on Tuesday if he finishes reading the book on Wednesday what fractio
    10·1 answer
  • Sweaters already on sale for 30% off the regular price cost $28 when purchased with a promotional coupon that allows an addition
    13·1 answer
  • Which graph is this?
    13·2 answers
  • Pls answer i give brainly!!!
    14·2 answers
  • The Hiking Club plans to go camping in a State park where the probability of rain on any given day is 2/3. What is the probabili
    10·1 answer
  • What is the value of the expression<br> (33 +53)<br> ?<br> 42<br> Answer:<br> Submit Answer
    7·2 answers
  • Any help would be great!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!