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
valkas [14]
3 years ago
12

Did I do this right?

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
3 0
\bf f(x)=|x+2|\implies f(x)=\pm\sqrt{(x+2)^2}\implies f(x)=\left[ (x+2)^2 \right]^{\frac{1}{2}}
\\\\\\
\cfrac{dy}{dx}=\stackrel{chain~rule}{\cfrac{1}{2}[(x+2)^2]^{-\frac{1}{2}}\cdot 2(x+2)^1\cdot 1}\implies \cfrac{dy}{dx}=[(x+2)^2]^{-\frac{1}{2}}(x+2)
\\\\\\
\cfrac{dy}{dx}=\cfrac{x+2}{[(x+2)^2]^{\frac{1}{2}}}\implies \left. \cfrac{dy}{dx}=\cfrac{x+2}{\pm \sqrt{(x+2)^2}} \right|_{x=1}\implies \cfrac{3}{\pm 3}

check the picture below. the point 1,3 is on the increasing slope side, so will be 3/3 or 1.

You might be interested in
Please help! calculate the maximum volume of the box.
lina2011 [118]
Have you used the length*width*height?
8 0
3 years ago
Ron wants to buy a video game with a selling price of ?$36?, on sale for? 50% off. The sales tax in his state is 5.5 %. How much
cestrela7 [59]

Answer:

Yes, it costs $18.99.

Step-by-step explanation:

The game is originally $36 and a game 50% off is 36/2 = $18.

The sale price is $18.

The state charges 5.5% tax which means you pay 105.5% of the sale price.

1.055(18) = 18.99

The final total is 18.99 which means Ron's $19 is enough.

7 0
3 years ago
If there are twelve apples and someone takes -24 how many apples will there be left
wolverine [178]

Equation = 12 - -24 = ?

After keep, change, flip: 12 + 24 = ?

Answer = 36

7 0
3 years ago
Read 2 more answers
If f(x) = 3 ^ x - 4 what is f(- 2) ?​
Karolina [17]

Answer:

-35/9

Step-by-step explanation:

(3^-2)-4

1/9-4

-35/9

8 0
2 years ago
For a field trip for students Road in cars and the rest filled nine buses how many students were in each bus it for how to 72 st
jasenka [17]
72 divided by 9 equals 8
72/9=8
8 0
3 years ago
Other questions:
  • What is 3 1/4 x 6 3/4 = i need help i will mark you the brainiest to!!!!!!!!
    5·1 answer
  • What’s the correct answer for this?
    14·1 answer
  • The unit costs of 10 different kinds of cereal are shown.
    13·2 answers
  • Which of the following is a multiple of 5
    12·2 answers
  • Pls Help! Which of the following equations represents a line that is parallel to the line y = - x – 16.
    7·1 answer
  • Please help!<br> What percentage of students scored between 70 and 90?image^
    13·1 answer
  • Enter the equation of the line meeting the given conditions. Please put the equation instandard form.
    10·1 answer
  • How do I find the angles here?
    8·2 answers
  • What does x equals (x+16)
    13·2 answers
  • A student's tuition was $3000. A loan was obtained for 5/6 of the tuition. How much was the loan?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!