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
Tanya [424]
3 years ago
5

Can someone please help me out here?

Mathematics
2 answers:
fenix001 [56]3 years ago
6 0
1. D
2. A
3. C
Question 2 MIGHT be D, but I think it's A
Leto [7]3 years ago
3 0
The answers are

3) d
4) a
5) c
You might be interested in
A company manufactures running shoes and basketball shoes. The total revenue (in thousands of dollars) from x1 units of running
Alborosie

Answer:

x_1 =2 , x_2=7

Step-by-step explanation:

Consider the revenue function given by R(x_1,x_2) = -5x_1^2-8x_2^2 -2x_1x_2+34x_1+116x_2. We want to find the values of each of the variables such that the gradient( i.e the first partial derivatives of the function) is 0. Then, we have the following (the explicit calculations of both derivatives are omitted).

\frac{dR}{dx_1} = -10x_1-2x_2+34 =0

\frac{dR}{dx_2} = -16x_2-2x_1+116 =0

From the first equation, we get, x_2 = \frac{-10x_1+34}{2}.If we replace that in the second equation, we get

-16\frac{-10x_1+34}{2} -2x_1+116=0= 80x_1-2x_1+116-272= 78x_1-156

From where we get that x_1 = \frac{156}{78}=2. If we replace that in the first equation, we get

x_2 = \frac{-10\cdot 2 +34}{2}=\frac{14}{2} = 7

So, the critical point is (x_1,x_2) = (2,7). We must check that it is a maximum. To do so, we will use the Hessian criteria. To do so, we must calculate the second derivatives and the crossed derivatives  and check if the criteria is fulfilled in order for it to be a maximum. We get that

\frac{d^2R}{dx_1dx_2}= -2 = \frac{d^2R}{dx_2dx_1}

\frac{d^2R}{dx_{1}^2}=-10, \frac{d^2R}{dx_{2}^2}=-16

We have the following matrix,  

\left[\begin{matrix} -10 & -2 \\ -2 & -16\end{matrix}\right].

Recall that the Hessian criteria says that, for the point to be a maximum, the determinant of the whole matrix should be positive and the element of the matrix that is in the upper left corner should be negative. Note that the determinant of the matrix is (-10)\cdot (-16) - (-2)(-2) = 156>0 and that -10<0. Hence, the criteria is fulfilled and the critical point is a maximum

8 0
3 years ago
Read 2 more answers
2.11 as a mixed number in simplest form
Elis [28]
2.11 = 2 \frac{11}{100}
7 0
2 years ago
Read 2 more answers
If 40 people buy lemonade while at the food stand, what percent of the people bought lemonade? Illustrate on the number line.
Marina86 [1]

Answer:

Transforms

Step-by-step explanation:

Transforms

6 0
3 years ago
Is this true 1/2 &gt;0.25
Lesechka [4]
Yes, 1/2 is 0.50. So it is greater than 0.25.
6 0
3 years ago
Read 2 more answers
Points A, B, and C lie on circle M such that
Mice21 [21]

Answer:

i need help to with this Qestion to

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What is the plural name for mitochondrion?
    10·2 answers
  • You borrow $1900 to buy a refrigerator. The simple interest rate is 11%. You pay off the loan after 5 years. How much do you pay
    7·1 answer
  • Determine the number of solutions to the system:<br><br> x + 6y = 6<br><br> 7x - 3y = - 3
    8·1 answer
  • F the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc?
    10·1 answer
  • I don't understand :/
    10·2 answers
  • Joel earns 1500 per month. if he spends 375 on rent each month what percent of his income does he has
    7·2 answers
  • I need help on my math
    9·1 answer
  • Find the area of a sector with a central angle of 126 degrees and a radius of 11.8 m. Round to the nearest tenth.
    12·1 answer
  • Please help me<br><br> if it’s blurry it should let you zoom in<br> i will mark brainly
    5·1 answer
  • order to estimate the average time spent on the computer terminals per student at a university, data were collected for a sample
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!