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
alukav5142 [94]
2 years ago
9

I need help please with this 1 problem

Mathematics
1 answer:
Lyrx [107]2 years ago
5 0

Answer:

See below, please

Step-by-step explanation:

We know

f(x) =  {x}^{2}  + 3x - 7

g(x) = 3x + 5

h(x) = 2 {x}^{2}  - 4

Hence

f(g(x))

=  {(3x + 5)}^{2}  + 3 \times (3x + 5) - 7

= (9 {x}^{2}  + 30x + 25) + (9x + 15) - 7

= 9 {x}^{2}  + 39x + 33

h(g(x))

= 2 \times  {(3x + 5)}^{2}  - 4

2 \times (9 {x}^{2}  + 30x + 25) - 4

= 18 {x}^{2}  + 60x + 50 - 4

= 18 {x}^{2}  + 60x + 46

(h - f)(x)

= h(x) - f(x)

= (2 {x}^{2}  - 4) - ( {x}^{2}  + 3x - 7)

=  {x}^{2}  - 3x + 3

(f + g)(x)

= f(x) + g(x)

= ( {x}^{2}  + 3x - 7) + (3x + 5)

=  {x}^{2}  + 6x - 2

You might be interested in
5 / 3 x + 1 / 3x equals 13 + 1 / 3 x + 8 / 3 x
NNADVOKAT [17]

Answer: x = - 12/9 ( the equation is negative)

Step-by-step explanation:

\frac{5}{3}x+\frac{1}{3}=13+\frac{1}{3}x+\frac{8}{3}x

\frac{5}{3}x=3x+\frac{38}{3}

\frac{5}{3}x-3x=3x+\frac{38}{3}-3x

-\frac{4}{3}x=\frac{38}{3}

3\left(-\frac{4}{3}x\right)=\frac{38\cdot \:3}{3}

-4x=38

\frac{-4x}{-4}=\frac{38}{-4}

x=-\frac{19}{2}

8 0
3 years ago
Read 2 more answers
Solve: 2cos(x)-square root 3=0 for 0 less than x less than 2 pi
Leona [35]

Answer:

The general solution of   cos x = cos(\frac{\pi }{6})   is  

                                                x = 2nπ±\frac{\pi }{6}

The general solution values  

                                 x = - \frac{\pi }{6}  and x = \frac{\pi }{6}

Step-by-step explanation:

Explanation:-

Given equation is  

                              2cosx-\sqrt{3} =0  for 0

                              2cosx =\sqrt{3}

Dividing '2' on both sides, we get

                             cos x =\frac{\sqrt{3} }{2}

                             cos x = cos(\frac{\pi }{6})

<em>General solution of cos θ = cos ∝ is θ = 2nπ±∝</em>

<em>Now The general solution of   </em>cos x = cos(\frac{\pi }{6})<em>   is  </em>

<em>                                                 x = 2nπ±</em>\frac{\pi }{6}<em></em>

put n=0

x = - \frac{\pi }{6}  and x = \frac{\pi }{6}

Put n=1  

x = 2\pi +\frac{\pi }{6} = \frac{13\pi }{6}

x = 2\pi -\frac{\pi }{6} = \frac{11\pi }{6}

put n=2

x = 4\pi +\frac{\pi }{6} = \frac{25\pi }{6}

x = 4\pi -\frac{\pi }{6} = \frac{23\pi }{6}

And so on

But given 0 < x< 2π

The general solution values  

                                 x = - \frac{\pi }{6}  and x = \frac{\pi }{6}

                               

6 0
3 years ago
Geometry- can someone do the second translation and give me the coordinateS PLEASE BRAINLIESF AND LOTS OF POINTS​
Eva8 [605]

Answer: a

Step-by-step explanation:

6 0
3 years ago
A cone has a diameter of 24cm and a volume of 2713cm3. What is best approximation of height of cone?
Leokris [45]
V=(1/3)hpir^2
aprox

d=2r
d/2=r
d=24
r=24/2=12

V=2713

2713=(1/3)hpi(12^2)
2713=(1/3)hpi(144)
2713=48pih
divide both sides by 48
56.5208=hpi
aprox pi=3.14
divide both sides by 3.14
56.5208/3.14=h=18.0003
height=18cm
7 0
3 years ago
Use the four-step definition of the derivative to find f'(x) if f(x) = −4x^3 −1.
guapka [62]

\stackrel{de finition \textit{ of a derivative as a limit}}{\lim\limits_{h\to 0}~\cfrac{f(x+h)-f(x)}{h}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{[-4(x+h)^3-1]~~ - ~~[-4x^3-1]}{h} \\\\\\ \cfrac{[-4(x^3+3x^2h+3xh^2+h^3)-1]~~ ~~+4x^3+1}{h} \\\\\\ \cfrac{[-4x^3-12x^2h-12xh^2-4h^3-1]~~ ~~+4x^3+1}{h} \\\\\\ \cfrac{-4x^3-12x^2h-12xh^2-4h^3-1+4x^3+1}{h}\implies \cfrac{-12x^2h-12xh^2-4h^3}{h}

\cfrac{h(-12x^2-12xh-4h^2)}{h}\implies -12x^2-12xh-4h^2 \\\\\\ \lim\limits_{h\to 0}~-12x^2-12xh-4h^2\implies \lim\limits_{h\to 0}~-12x^2-12x(0)-4(0)^2 \\\\[-0.35em] ~\dotfill\\\\ ~\hfill \lim\limits_{h\to 0}~-12x^2~\hfill

7 0
2 years ago
Other questions:
  • 20 points<br> What is the value of p in the linear equation ?<br> −4<br> −2<br> 2<br> 4
    14·2 answers
  • Use the base of the grassy area to find the approximate area of the circular garden use pi = 3.14 what’s the answer ?
    8·1 answer
  •  Question Help
    14·2 answers
  • Advertisers often refer to CPM (Cost per thousand people reached) when quoting advertising rates. If a website
    15·2 answers
  • Tamiko got a check for 109.60 and a small bonus check for 34.15.What is the net result of her transactions using the result from
    15·1 answer
  • There is 1 skin cell.each day the cell splits in 2.after several days there are 64 cells.how many days have passed?
    11·2 answers
  • The graph of a linear function is shown, why what value does the linear function grow move the numbers in the blanks to complete
    13·1 answer
  • Chase is trying to pick out an outfit for the first day of school. He can choose from 4
    8·2 answers
  • -9 divided by 7.2 help me plz
    9·1 answer
  • 13.62<br><br> Round to the<br> nearest whole<br> number.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!