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
ruslelena [56]
3 years ago
7

Determine the second derivative of y=cosxtanx. Thanks :)

Mathematics
1 answer:
devlian [24]3 years ago
6 0
f(x)=cosxtanx\\\\(cosxtanx)'=\left(cosx\cdot\frac{sinx}{cosx}\right)'=(sinx)'=cosx\\\\(cosx)'=-sinx\\\\f''(x)=-sinx\\\\\frac{\delta^2 f}{\delta x^2}=-sinx
You might be interested in
Will 4x7/8 be =,<,or> than 7/8
MrRa [10]
>,  4x7/8 is greater than 7/8
3 0
3 years ago
Find the unit rate.<br><br> 6,601 plants in 287 rows = _________ plants per row
o-na [289]

Answer:The answer is 9 plants/1 row plants per row.

Step-by-step explanation:

6601/287=9

7 0
3 years ago
On a certain day, Tim invested $1,000 at 10 percent annual interest, compounded annually, and Lana invested 2,000 at 5 percent a
Zepler [3.9K]

Answer:

A. $5

Step-by-step explanation:

Tim: 1000 x (1 + 0.10)² = 1210

Interest: 1210 - 1000 = 210

Lana: 2000 x (1 + 0.05)² = 2205

interest': 2205 - 2000 = 205

difference: 210 - 205 = 5

8 0
3 years ago
Pls answer as soon as possible thanks :)
denis23 [38]

Answer:

Step-by-step explanation:

0.22 ,2.22%, 2.22 ,2.222

2/9 turns into 0.22 and it is the least than you have the percentage and so on

7 0
3 years ago
Read 2 more answers
The Wall Street Journal reports that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deduction
Len [333]

Answer:

(a) <em>                             </em><em>n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b) The correct option is (b).

Step-by-step explanation:

Let the random variable <em>X</em> represent the amount of deductions for taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return.

The mean amount of deductions is, <em>μ</em> = $16,642 and standard deviation is, <em>σ</em> = $2,400.

Assuming that the random variable <em>X </em>follows a normal distribution.

(a)

Compute the probability that a sample of taxpayers from this income group who have itemized deductions will show a sample mean within $200 of the population mean as follows:

  • For a sample size of <em>n</em> = 20

P(\mu-200

                                           =P(-0.37

  • For a sample size of <em>n</em> = 50

P(\mu-200

                                           =P(-0.59

  • For a sample size of <em>n</em> = 100

P(\mu-200

                                           =P(-0.83

  • For a sample size of <em>n</em> = 500

P(\mu-200

                                           =P(-1.86

<em>                                  n</em> :      20           50          100         500

P (-200 < <em>X</em> - <em>μ </em>< 200) : 0.2886    0.4444    0.5954    0.9376

(b)

The law of large numbers, in probability concept, states that as we increase the sample size, the mean of the sample (\bar x) approaches the whole population mean (\mu_{x}).

Consider the probabilities computed in part (a).

As the sample size increases from 20 to 500 the probability that the sample mean is within $200 of the population mean gets closer to 1.

So, a larger sample increases the probability that the sample mean will be within a specified distance of the population mean.

Thus, the correct option is (b).

8 0
3 years ago
Other questions:
  • Please help me :) Thanks!
    6·2 answers
  • 5. Find the value of x. Any help is appreciated. Thanks! ^-^
    10·1 answer
  • The perimeter of △MTV is 605 in.<br><br> MV = ?<br><br> m∠M = ?
    6·1 answer
  • Simplify the expression. 2(3y - 7) - 5y(2 - y)
    10·2 answers
  • What is a multiple definition of a rhombus
    11·1 answer
  • 4 game dice have been rolled out. Find the probability that all of the same points will drop.
    8·2 answers
  • Find the greatest common factor of 15x^6 and 33x^4y^5
    8·2 answers
  • Find the slope and y-intercept of the line whose equation is given.
    10·1 answer
  • Solve the equation using the quadratic formula.<br> x^2+ 11x + 9 = 0<br> The solution set is
    6·1 answer
  • An Olympic swimmer can swim 50 meters in 21 seconds. How long would it take the swimmer to swim 800 meters if he kept up the sam
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!