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
Degger [83]
3 years ago
8

Please help

Mathematics
1 answer:
katrin2010 [14]3 years ago
7 0
\dfrac{n^2+3n+2}{n^2+6n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n^2+2n+n+2}{n^2+4n+2n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n(n+2)+1(n+2)}{n(n+4)+2(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{(n+2)(n+1)}{(n+2)(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{n+1}{n+4}-\dfrac{2n}{n+4}=\dfrac{n+1-2n}{n+4}=\dfrac{1-n}{n+4}

Answer:\ \boxed{B.\ \dfrac{1-n}{n+4}}
You might be interested in
Explain how to do this please show your work
madreJ [45]

Answer:

(x-  5)(x - 3)

x(x - 3) -5(x - 3)

x^2 - 3x - 5x + 15

x^2 - 8x + 15

4 0
2 years ago
! et up your proportions) Eduardo counted eight seconds between seeing lightning and hearing thunder, and he knew that the light
vova2212 [387]

Answer:

1 mile away this is right

3 0
2 years ago
Find the vectors T, N, and B at the given point. r(t) = < t^2, 2/3t^3, t >, (1, 2/3 ,1)
maxonik [38]

Answer with Step-by-step explanation:

We are given that

r(t)=< t^2,\frac{2}{3}t^3,t >

We have to find T,N and B at the given point t > (1,2/3,1)

r'(t)=

\mid r'(t) \mid=\sqrt{(2t)^2+(2t^2)^2+1}=\sqrt{(2t^2+1)^2}=2t^2+1

T(t)=\frac{r'(t)}{\mid r'(t)\mid}=\frac{}{2t^2+1}

Now, substitute t=1

T(1)=\frac{}{2+1}=\frac{1}{3}

T'(t)=\frac{-4t}{(2t^2+1)^2} +\frac{1}{2t^2+1}

T'(1)=-\frac{4}{9}+\frac{1}{3}

T'(1)=\frac{1}{9}=

\mid T'(1)\mid=\sqrt{(\frac{-2}{9})^2+(\frac{4}{9})^2+(\frac{-4}{9})^2}=\sqrt{\frac{36}{81}}=\frac{2}{3}

N(1)=\frac{T'(1)}{\mid T'(1)\mid}

N(1)=\frac{}{\frac{2}{3}}=

N(1)=

B(1)=T(1)\times N(1)

B(1)=\begin{vmatrix}i&j&k\\\frac{2}{3}&\frac{2}{3}&\frac{1}{3}\\\frac{-1}{3}&\frac{2}{3}&\frac{-2}{3}\end{vmatrix}

B(1)=i(\frac{-4}{9}-\frac{2}{9})-j(\frac{-4}{9}+\frac{1}{3})+k(\frac{4}{9}+\frac{2}{9})

B(1)=-\frac{2}{3}i+\frac{1}{3}j+\frac{2}{3}k

B(1)=\frac{1}{3}

5 0
3 years ago
WILL MARK BRAINIEST! 25 POINTS! What is 2^4/3 equal to? ∛8 ²√8 ∛16 ²√16 Please show work, i need to understand this
Mariana [72]

Answer:

∛16

Step-by-step explanation:

2^4/3

2^4 = 16

Then  16^1/3

∛16

4 0
3 years ago
Read 2 more answers
HELPPPPPPP ASAPPPPPP PLEASEEEE
arsen [322]

Answer:

i dont get it

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Which statements are true about a rectangular pyramid with a height of 9 centimeters and a base with the dimensions of 4 centime
    10·2 answers
  • In a study commuting patterns of people in a large metropolitan area, respondents were asked to report the time they took to tra
    12·1 answer
  • Which equation describes a line of symmetry for the figure shown? x = 0 y=−x y = x y = 0
    8·1 answer
  • Find the missing number of each unite rate 10/2=?/1 16/4= ?/1
    8·1 answer
  • What is the equation of the line that passes through the point (-5, -11) and is parallel to the line whose equation is y = 2x +8
    12·2 answers
  • Score: 0 of 1 pt
    12·1 answer
  • A section of a deck is shaped like a trapezoid. For this section, the length of one base is 23 feet, and the length of the other
    12·1 answer
  • -6y -8 = -18<br> can anyone solve this
    15·2 answers
  • I need Help please please
    12·1 answer
  • A cyclist travels 9 miles in 45 minutes.<br> What is his average speed in mph?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!