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
melamori03 [73]
3 years ago
15

If 150 televisions are sold , what is the profit

Mathematics
2 answers:
Katena32 [7]3 years ago
7 0
What are the prices ?
Aliun [14]3 years ago
5 0

Answer:

Idk

Step-by-step explanation:

You have to have the prices of the televisions

You might be interested in
How to find the derivative of cos^2x? i seem to be confused.
slamgirl [31]
If you're using the app, try seeing this answer through your browser:  brainly.com/question/2927231

————————

You can actually use either the product rule or the chain rule for this one. Observe:

•  Method I:

y = cos² x

y = cos x · cos x


Differentiate it by applying the product rule:

\mathsf{\dfrac{dy}{dx}=\dfrac{d}{dx}(cos\,x\cdot cos\,x)}\\\\\\
\mathsf{\dfrac{dy}{dx}=\dfrac{d}{dx}(cos\,x)\cdot cos\,x+cos\,x\cdot \dfrac{d}{dx}(cos\,x)}


The derivative of  cos x  is  – sin x. So you have

\mathsf{\dfrac{dy}{dx}=(-sin\,x)\cdot cos\,x+cos\,x\cdot (-sin\,x)}\\\\\\
\mathsf{\dfrac{dy}{dx}=-sin\,x\cdot cos\,x-cos\,x\cdot sin\,x}


\therefore~~\boxed{\begin{array}{c}\mathsf{\dfrac{dy}{dx}=-2\,sin\,x\cdot cos\,x}\end{array}}\qquad\quad\checkmark

—————

•  Method II:

You can also treat  y  as a composite function:

\left\{\!
\begin{array}{l}
\mathsf{y=u^2}\\\\
\mathsf{u=cos\,x}
\end{array}
\right.


and then, differentiate  y  by applying the chain rule:

\mathsf{\dfrac{dy}{dx}=\dfrac{dy}{du}\cdot \dfrac{du}{dx}}\\\\\\
\mathsf{\dfrac{dy}{dx}=\dfrac{d}{du}(u^2)\cdot \dfrac{d}{dx}(cos\,x)}


For that first derivative with respect to  u, just use the power rule, then you have

\mathsf{\dfrac{dy}{dx}=2u^{2-1}\cdot \dfrac{d}{dx}(cos\,x)}\\\\\\
\mathsf{\dfrac{dy}{dx}=2u\cdot (-sin\,x)\qquad\quad (but~~u=cos\,x)}\\\\\\
\mathsf{\dfrac{dy}{dx}=2\,cos\,x\cdot (-sin\,x)}


and then you get the same answer:

\therefore~~\boxed{\begin{array}{c}\mathsf{\dfrac{dy}{dx}=-2\,sin\,x\cdot cos\,x}\end{array}}\qquad\quad\checkmark


I hope this helps. =)


Tags:  <em>derivative chain rule product rule composite function trigonometric trig squared cosine cos differential integral calculus</em>

3 0
3 years ago
The price of an item has been reduced by 35% . The original price was 91 . Find the price now
nadya68 [22]
You have to take the percentage  of the original price and subtract it to find the reduced price
8 0
3 years ago
Read 2 more answers
What is the degree of the polynomial given below?
Ivenika [448]

Answer:

it is 3 i am pretty sure

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Jason purchased a pack of game cards that was on sale for 13% off. The sales tax in his county is 8%. Let y represent the origin
belka [17]

Answer:b

Step-by-step explanation:

7 0
2 years ago
the diagram, JG = 5 cm and GE = 10 cm. Based on this information, can G be a centroid of triangle HJK?
SIZIF [17.4K]
Point G cannot be a centroid because GE is wider that JG or JG is shorter than GE. So in this diagram GE is wider than JG with 10 cm and 5 cm respectively based on this information Point G cannot be a centroid of triangle HJK. So the answer is point G cannot be a centroid because JG is shorter than GE.
4 0
2 years ago
Read 2 more answers
Other questions:
  • Please help me <br>please please ​
    14·1 answer
  • Write two verbal expressions for b+30.​
    7·2 answers
  • Iris charges a fee for her consulting services plus an hourly rate that is 11 times her fee. On a 7-hour job, Iris charged $470.
    13·1 answer
  • Water flows into a conical container (radius:12cm, height:18cm) as shown below at the rate of 2cm^3 s^-1
    12·1 answer
  • OFFERING A LOT OF POINTS. please write 2 or
    8·1 answer
  • Solve the equation x2 = 10.<br> x = 3/10<br> X = ✓10<br> x = +5<br> X = 5
    10·1 answer
  • PLZ HELPPPPPPPPPPPPPPPP
    6·1 answer
  • Macy’s is having a one-day 25% off special. If Bryan bought $110 worth of items, what would the final bill total after applying
    12·1 answer
  • Joan had a difference of opinion with her boss and hence quit her job. She is now on the lookout for another suitable job. What
    14·2 answers
  • <img src="https://tex.z-dn.net/?f=8mx%5E%7B2%7Dnx%5E%7B4%7D" id="TexFormula1" title="8mx^{2}nx^{4}" alt="8mx^{2}nx^{4}" align="a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!