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
Finger [1]
2 years ago
12

The product of (-3xy?)(5x²y3) is

Mathematics
1 answer:
egoroff_w [7]2 years ago
7 0

Answer:

-3xy

Step-by-step explanation:

You might be interested in
I am giving all of my points away in sections this is the 6th
DaniilM [7]

Answer:

okkkk

Step-by-step explanation:

Thank you so much!! Have a splendid day and stay safe!!

6 0
2 years ago
Read 2 more answers
What is the ratio of 270 miles in 6 hours
bulgar [2K]
I depends if it is asking for miles to hours or hours to miles but, doing i would do hours to miles so it would be 270:6 which simplifies to 45:1
6 0
3 years ago
Use the Trapezoidal Rule, the Midpoint Rule, and Simpson's Rule to approximate the given integral with the specified value of n.
Otrada [13]

I guess the "5" is supposed to represent the integral sign?

I=\displaystyle\int_1^4\ln t\,\mathrm dt

With n=10 subintervals, we split up the domain of integration as

[1, 13/10], [13/10, 8/5], [8/5, 19/10], ... , [37/10, 4]

For each rule, it will help to have a sequence that determines the end points of each subinterval. This is easily, since they form arithmetic sequences. Left endpoints are generated according to

\ell_i=1+\dfrac{3(i-1)}{10}

and right endpoints are given by

r_i=1+\dfrac{3i}{10}

where 1\le i\le10.

a. For the trapezoidal rule, we approximate the area under the curve over each subinterval with the area of a trapezoid with "height" equal to the length of each subinterval, \dfrac{4-1}{10}=\dfrac3{10}, and "bases" equal to the values of \ln t at both endpoints of each subinterval. The area of the trapezoid over the i-th subinterval is

\dfrac{\ln\ell_i+\ln r_i}2\dfrac3{10}=\dfrac3{20}\ln(ell_ir_i)

Then the integral is approximately

I\approx\displaystyle\sum_{i=1}^{10}\frac3{20}\ln(\ell_ir_i)\approx\boxed{2.540}

b. For the midpoint rule, we take the rectangle over each subinterval with base length equal to the length of each subinterval and height equal to the value of \ln t at the average of the subinterval's endpoints, \dfrac{\ell_i+r_i}2. The area of the rectangle over the i-th subinterval is then

\ln\left(\dfrac{\ell_i+r_i}2\right)\dfrac3{10}

so the integral is approximately

I\approx\displaystyle\sum_{i=1}^{10}\frac3{10}\ln\left(\dfrac{\ell_i+r_i}2\right)\approx\boxed{2.548}

c. For Simpson's rule, we find a quadratic interpolation of \ln t over each subinterval given by

P(t_i)=\ln\ell_i\dfrac{(t-m_i)(t-r_i)}{(\ell_i-m_i)(\ell_i-r_i)}+\ln m_i\dfrac{(t-\ell_i)(t-r_i)}{(m_i-\ell_i)(m_i-r_i)}+\ln r_i\dfrac{(t-\ell_i)(t-m_i)}{(r_i-\ell_i)(r_i-m_i)}

where m_i is the midpoint of the i-th subinterval,

m_i=\dfrac{\ell_i+r_i}2

Then the integral I is equal to the sum of the integrals of each interpolation over the corresponding i-th subinterval.

I\approx\displaystyle\sum_{i=1}^{10}\int_{\ell_i}^{r_i}P(t_i)\,\mathrm dt

It's easy to show that

\displaystyle\int_{\ell_i}^{r_i}P(t_i)\,\mathrm dt=\frac{r_i-\ell_i}6(\ln\ell_i+4\ln m_i+\ln r_i)

so that the value of the overall integral is approximately

I\approx\displaystyle\sum_{i=1}^{10}\frac{r_i-\ell_i}6(\ln\ell_i+4\ln m_i+\ln r_i)\approx\boxed{2.545}

4 0
3 years ago
Awad claims that when m is a negative integer and n is a positive integer, n-m is
Lelu [443]

no ablo inglés solo español perdón por no responderte

6 0
2 years ago
Two angles of a triangle measure 78 and 24
Leviafan [203]

Answer: 78

Step-by-step explanation: Remember every triangle ads up to a total of 180 degrees. You just have to make sure that it adds up to 180

8 0
3 years ago
Other questions:
  • What is the value of g if 5(2-g)=0 ? *<br> Your answer
    6·1 answer
  • Help me please with numbers 8-11 I'm stuck!!
    5·1 answer
  • What is the relationship between the ratios? 10/24 and 5/12 Drag and drop to complete the statement.
    14·2 answers
  • Write an equation to find how long it will take for the mass of the radioactive substance to reach 27grams.
    13·1 answer
  • Please!!!! Order the following from least to greatest!!!
    14·1 answer
  • piece of fabric that is 5 in by 13 inches contains 6500 threads of cotton what is the density of the piece of fabric and turn it
    14·1 answer
  • at franks work he can produce 4 widgets every hour which of the following expresses how many widgets frank can make during a who
    12·1 answer
  • Can someone please factor this expression for me a²+4a-45​
    12·1 answer
  • If 20% discount on an item amounts to Rs 160, find the marked price of the item
    12·1 answer
  • Find the distance between the points (2, 4) and (8, -8) on a coordinate plane, to the nearest whole number.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!