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
lorasvet [3.4K]
3 years ago
12

The area A of a rectangle with a width of x-1 is given by A=2x^4+x - 7x + 4. Find an expression for the

Mathematics
1 answer:
Tcecarenko [31]3 years ago
6 0
-1/2,4







No explanation
You might be interested in
What is the minimum value of the function?
12345 [234]

Answer:

-1 ..?

Step-by-step explanation: because the lowest number a curve touches is -1

3 0
3 years ago
Let us have four distinct collinear points $a,$ $b,$ $c,$ and $d$ on the cartesian plane. the point $c$ is such that $\dfrac{ab}
Deffense [45]

Start with a line segment connecting two points, A and B. \dfrac{DA}{BA}=3 means DA is 3 times longer than BA. Clearly, D cannot fall between A and B because that would mean DA is shorter than BA. So there are two possible locations where D can be placed on the line relative to A and B.

But with \dfrac{DB}{BA}=2, or the fact that DB is 2 times longer than BA, we can rule out one of these positions; referring to the attachment, if we place D to the left of A, then DB would be 4 times longer than BA.

Finally, \dfrac{AB}{CB}=\dfrac12, so that CB is 2 times longer than AB. Again we have two possible locations for point C (it cannot fall between A and B), but one of them forces C to occupy the same point as D. However, A, B, C, D are distinct, so C must fall to the left of A.

Now let d be the length of AB. Then the length of CD in terms of d is 4d. We have the coordinates of C and D, and the distance between them is \sqrt{(4-0)^2+(0-4)^2}=4\sqrt2. So

4d=4\sqrt2\implies d=\sqrt2

The slope of the line through C and D is

\dfrac{0-4}{4-0}=-1

and so the equation of the line through these points is

y-4=-(x-0)\implies x+y=4

So the coordinates of A are (x,y)=(x,4-x). The distance between C and A is d=\sqrt2, so we have

\sqrt{(x-0)^2+(4-x-4)^2}=\sqrt{2x^2}=|x|\sqrt2=\sqrt2\implies|x|=1

Since A falls to the right of C (in the x,y plane, not just in the sketch), we know to take the positive value x=1. Then the y coordinate is y=4-1=3.

All this to say that A is the point (1, 3), so

2x+y=2+3=5

5 0
3 years ago
What is the multiplicative rate of change of the function
mario62 [17]

Answer: B \frac{2}{3}


Step-by-step explanation:

From the given table

When x changes from 1 to 2 , value of y changes from 6 to 4

The multiplicative rate of change=\frac{4}{6}=\frac{2}{3}

Similarly we can check

When x changes from 2 to 3 , value of y changes from 4 to \frac{8}{3}

The multiplicative rate of change=\frac{\frac{8}{3}}{4}=\frac{2}{3}

When x changes from 3 to 4 , value of y changes from  \frac{8}{3} to  \frac{16}{9}

The multiplicative rate of change=\frac{\frac{16}{9}}{\frac{8}{3}}=\frac{2}{3}

Therefore, the multiplicative rate of exponential function = \frac{2}{3}


5 0
3 years ago
Read 2 more answers
HELP PLEASE
Free_Kalibri [48]

D.The puppy gains approximately 0.25 pound each week.

<u>x = no. of weeks</u> in f(x) = 0.25x + 1.2

3 0
3 years ago
Read 2 more answers
I NEED THE ANSWER ASAP PLEASE HELP!!
maksim [4K]
Answer:C


Explanation:none
8 0
3 years ago
Other questions:
  • Which phrase describes the algebraic expression StartFraction 7 over 8 EndFraction y minus 3?
    9·2 answers
  • Select the three models that represent 35%.
    8·1 answer
  • City A's population of 1115000 is decreasing at a rate of 15000 per year. City B's population of 698000 is increasing at a rate
    11·1 answer
  • Points A, B, and C are collinear and AB. AC at (n, q) and point C is located at (-3,-4). What are the values of n and q?​
    8·1 answer
  • What percent of 40 is 30?
    12·1 answer
  • Please help need it for a grade
    11·2 answers
  • If 10% of a group of children are girls, what is the ratio of girls to boys​
    15·1 answer
  • Pls help me I need this for my grade do all pls
    11·1 answer
  • Can you help me with this?
    10·2 answers
  • How do you write 8.04 × 104 in standard form?<br> (plzzz help) (NO LINKS)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!