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
Ksivusya [100]
2 years ago
10

The rectangle below has an area of c^2-4x-12 square meters and a length of x+2 meters what expression represents the width of th

e rectangle
Mathematics
1 answer:
Korolek [52]2 years ago
5 0

Answer:

Width = \frac{c^2 - 4x - 12  }{x+2}

Step-by-step explanation:

All we have to do is to use the method of changing the subject. First we know that length * width is equal to area.

Area = length * width

We have the area and the length but we don't have the width. So we substitute the values we have int the equation and make the width (w) the subject.

(c^2 - 4x - 12) = (x + 2) * w

(c^2 - 4x - 12) = w(x +2)

Divide both sides by (x+2) so w can stand alone.

\frac{c^2 - 4x - 12}{x+2} = \frac{w(x+2)}{x+2}

w = \frac{c^2 - 4x - 12  }{x+2}

You might be interested in
Can anyone pls help me to solve question 2 f and g and pls provide me a explanation I’m with that questions for three days
zvonat [6]

Answer:

  f)  a[n] = -(-2)^n +2^n

  g)  a[n] = (1/2)((-2)^-n +2^-n)

Step-by-step explanation:

Both of these problems are solved in the same way. The characteristic equation comes from ...

  a[n] -k²·a[n-2] = 0

Using a[n] = r^n, we have ...

  r^n -k²r^(n-2) = 0

  r^(n-2)(r² -k²) = 0

  r² -k² = 0

  r = ±k

  a[n] = p·(-k)^n +q·k^n . . . . . . for some constants p and q

We find p and q from the initial conditions.

__

f) k² = 4, so k = 2.

  a[0] = 0 = p + q

  a[1] = 4 = -2p +2q

Dividing the second equation by 2 and adding the first, we have ...

  2 = 2q

  q = 1

  p = -1

The solution is a[n] = -(-2)^n +2^n.

__

g) k² = 1/4, so k = 1/2.

  a[0] = 1 = p + q

  a[1] = 0 = -p/2 +q/2

Multiplying the first equation by 1/2 and adding the second, we get ...

  1/2 = q

  p = 1 -q = 1/2

Using k = 2^-1, we can write the solution as follows.

The solution is a[n] = (1/2)((-2)^-n +2^-n).

 

5 0
2 years ago
Using one complete sentence give a mathmatical definition of zero
just olya [345]

Answer:

Zero is an integer which is indicated by the symbol 0 in numbers and it is used to indicate that the count of an item when there are non of the item present which is one of the reasons zero along with the fact that it is the number between positive and negative numbers, why it is not associated with a positive or negative sign.

Step-by-step explanation:

A number which is not zero is said to be a non-zero number and the roots of a function is known as the zeros of the function.

5 0
2 years ago
Mrs. Chin paid a 20 percent tip on the bill for lunch.
dolphi86 [110]

Answer:

I think it's maybe $55.00

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What number makes the sentence true?<br> 15 – 7 = 3+1
nasty-shy [4]

Answer:

4

Step-by-step explanation:

Although you didn't give me any answers to go with your problem, I am assuming that since 15-7 is 8, and 3 + 1 = 4, the answer should be 4. Now regarding if it is times, it would be x2. Because for times 2 would be 8. Overall the answer should be 4.

3 0
3 years ago
Quadrilateral DEFG has vertices D(−2,4) , E(4,7) , F(10,3) , and G(8,0) .
fredd [130]

A rotation 270° counterclockwise about the origin is the same as rotation 90° clockwise about the origin and has a rule:

(x,y)→(y,-x).

Then:

  • D(−2,4)→D'(4,2)
  • E(4,7)→E'(7,-4)
  • F(10,3)→F'(3,-10)
  • G(8,0)→G'(0,-8)

Answer: the coordinates of vertices of quadrilateral D′E′F′G′ are D'(4,2), E'(7,-4), F'(3,-10), G'(0,-8).

8 0
2 years ago
Other questions:
  • Is 56 a whole number
    8·2 answers
  • What number is in the "tens" place in the following: 5,280?
    14·2 answers
  • 100 is what percent of 1000
    9·1 answer
  • A surveyor needs to determine the height of a tree. She places a mirror on the ground and paces backwards until she sees the top
    10·1 answer
  • GET 35 POINTS! I need help with these 3 questions!!
    6·1 answer
  • I need 10-12<br> It would be a huge help
    14·1 answer
  • Determine the wavelengths of all the possible photons that can be emitted from the n = 5 state of a hydrogen atom.
    12·1 answer
  • 2 3/10x-5/7y-4 5/6y-2 4/5x
    13·1 answer
  • What is the probability that the selected adult is a smoker?
    15·1 answer
  • 3 times a number equals 45
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!