Wednesday

March 1, 2017
**Calculus grade 12**

find dy/dx by implicit differentiation a) xy + x^5y^2 + 3x^3 - 4 = 1 b) lny = cos x thank you

*Thursday, June 21, 2012 by Albert*

**Calculus grade 12**

hi i need help differentiating these.. 1. y = cos(3x^2 + 2x) 2. y = ln(3x^2 + 5) thank you

*Thursday, June 21, 2012 by Albert*

**us history grade 7**

what are the pros and cons of the fur trade?

*Thursday, June 21, 2012 by kyle*

**Physics(please check)**

Solve for Q Q= sin^-1 1.5/9.8 I got 8.80 Is this correct? I have a TI-30 calculator and to do the sin^-1 I pushed the 2nd button and then sin. I am not sure if this is correct.

*Wednesday, June 20, 2012 by Hannah*

**Calculus - please check my work**

differentiate each function a) y = cos^3x b) y = sin(x^3) c) y = sin^2 xcos3x my answers: a) y' = 3cos^2 x(-sinx) b) y' = cos(x^3)(3x^2) c) for this one, i don't know which one is correct. i got 2 different answers but i think they may be the same.. im not sure, i did it twice...

*Tuesday, June 19, 2012 by Henry*

**physics**

A runner covers one lap of a circular track 40.0 m in diameter in 62.5 s. Suppose initially the runner starts by going in the north direction. Assume the speed is constant for the first half-lap and then constant for the 2nd half-lap. Suppose instead the runner ran these same ...

*Monday, June 4, 2012 by cody*

**math**

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 16% of your total grade, each major test is worth 21%, ...

*Sunday, June 3, 2012 by Ashley*

**9th Grade Algebra**

4x^2-11x+3=5x+4 How do I solve this?

*Thursday, May 31, 2012 by hockeyfreak2011*

**Algebra**

The final grade for a particular course is calculated by dividing total points earned by total points available. There are 120 points available in the first half of the course, and 140 points in the second half of the course. If a student earns 81% in the first half of the ...

*Monday, May 28, 2012 by Vilma*

**Calculus grade 12**

7. Where does the line r = (1, 2, -5) + t (2, -3, 1) meet the plane 2x + 5y - 3z = 6?

*Saturday, May 26, 2012 by j*

**11th grade math**

-2x+7+9x-4

*Thursday, May 24, 2012 by sky'toria*

**Physics**

A 1.2 kg block is attached to a horizontal 23 N/m spring and resting on a frictionless horizontal surface. The block is set oscillating with amplitude 10 cm and phase constant – π/2. A 2nd block with mass 0.8 kg moving at 1.7 m/s collides inelastically (the blocks stick...

*Thursday, May 24, 2012 by Erick*

**algebra**

Let cost = 600.00 fixed costs x = set of tiles $11.00 find the profit equation by substituting your equations for R and C P = R -C THE profit made for 26 and 31 tiles per month. 2nd part; use trail and error to find the quanity of tile sets per month yields the highest profit.

*Wednesday, May 23, 2012 by plz help*

**8 grade**

27.6 x 5.2 my answer is 138.00 is this right

*Monday, May 21, 2012 by codey*

**English 12 grade**

Which pilgrim preferred books to food and clothe?

*Monday, May 21, 2012 by Coumba*

**8th grade math**

how do you solve x+1/10= a whole number

*Monday, May 21, 2012 by sam*

**6th grade history**

Where did the mound builders live???

*Saturday, May 19, 2012 by Aria*

**geometry**

in a trivia question ;your team answered 32 out of 40 question correctly. the opposing team answered 16 out of 20 questions correctly. was the ratio of correctly answered quesstions to incorrectly questions the same or different for both teams? explain no they were not same ...

*Wednesday, May 16, 2012 by marko*

**6 grade math**

Can you help me with this integer problem? -8+6+(-10)+(-2)*(-10) is it 8????

*Tuesday, May 15, 2012 by unknown*

**8 th grade math**

12 is 150% of what number choices are 8,10, 18, 24 i answered 8 is that right?

*Monday, May 14, 2012 by Anonymous*

**8th grade math**

is 2/3 a fraction that can be renamed as a repeating decimal

*Monday, May 14, 2012 by Anonymous*

**poems**

does anyone know a poem about seashores and it has to be aroung grade 6 level thank u?

*Saturday, May 12, 2012 by smiley*

**algebra ll**

Need help please.. Identify -7x^3+6x^2+6x+9 Searching for the degree of the first term, 2nd term, 3rd term, 4th term and the degree of the polynomial? I thank you

*Saturday, May 5, 2012 by Alexis2*

**Calculus grade 12**

Determine an equation for the plane that contains the points A(6, 2, 3), B(5, 1, -3), and C(5, 7, -2).

*Thursday, May 3, 2012 by J*

**statistics**

assume adults have an IQ score that are normally distrubted with a mean of 105 and standard deviation of 20 A) find the percentage of adults that have an IQ between 94 and 116 B) find the percentage of adults IQ exceeding 120 C)Determine the 1st, 2nd, and 3rd quartiles for ...

*Friday, April 27, 2012 by VICTORIA*

**Math**

After a Math test, each of the twenty-five students in the class got a peek at the teacher's grade sheet. Each student noticed five A's. No student saw all the grades and no student saw his or her own grade. What is the minimum number of students who scored A on the test? 6?

*Thursday, April 26, 2012 by Rezu*

**Algebra**

help me solve this exponential problem P to the 3rd power times q 5 over 2 all over q to the 2nd power times r to the negative 6.

*Tuesday, April 24, 2012 by jeremy*

**physics**

3 boys pulling at the end of 3 ropes held together on a knot. one boy pulls with a force of 20 Newton eastward, while a 2nd boy pulls with the same magnitude force northward. in what direction and with what force must a 3rd boy be pulling if his pull of the knot is to be equal...

*Wednesday, April 18, 2012 by sarah grace santiago*

**math grade 12**

use the binomial theorem to expand and simplify (y^2-2)^6 )(y^2+2)^6

*Tuesday, April 17, 2012 by Jaxx*

**Physics**

Should the wavelengths computed from 2nd order lines be more accurate or more precise than those compute from 1st order lines?

*Tuesday, April 17, 2012 by Anonymous*

**to ms.sue**

thank you. how do you know im in 4th grade?

*Tuesday, April 17, 2012 by Celest*

**grade 6 math**

how many rectangles can have the perimiter of 46m

*Monday, April 16, 2012 by tony*

**historical globalization $ imperialism grade 10**

what does eurocentric attitude means?

*Monday, April 16, 2012 by kyle*

**Calculus grade 12**

differentiate the function a) y = cos³x b) y = Sin²xCos3x c) y = Sin (x³)

*Thursday, April 12, 2012 by Julie*

**Calculus grade 12**

differentiate the function ( a) y = cos³x b) y = Sin²xCos3x c) y = Sin (x³)

*Thursday, April 12, 2012 by Julie*

**7th grade history**

who was the frist dutch priest in eurpoe

*Wednesday, April 11, 2012 by caitlyn*

**Math 8th Grade**

What is the y-int of the graph of 4x+2y=12

*Tuesday, April 10, 2012 by Lana Von Monroe*

**Health: 6th grade**

What do you do if someone needs a splint?

*Wednesday, April 4, 2012 by Losa*

**Math**

If I missed 24 problems out of 40, what is my grade?

*Tuesday, April 3, 2012 by Mattie*

**Science 7R - The Human Body Prep Test**

I have a test tommrrow on the The Human Body and I asked my science teacher if she can post a castle learning assignment about the Human Body (the day before the test she always post a caslte learning assignment for us to study and do well on the test the next day) and then ...

*Monday, April 2, 2012 by Laruen*

**Math**

Of the 300 tickets 240 were sold to sixth grade studentss What percent of the total number of tickets sold were sold sixth grade students

*Saturday, March 31, 2012 by Leslie*

**6th grade history**

how did athens become rich?

*Thursday, March 29, 2012 by katrina*

**6th grade math**

35/(2+5)(2^3)-15

*Wednesday, March 28, 2012 by Katie*

**6th grade english**

is indiana jones a mystery story?

*Thursday, March 22, 2012 by ☻i♥zee☻-rfm*

**Math**

Mathew has received $1 the first week, $3 the 2nd week, $5 the 3rd week and so on until he has received a total of $1 000 000. What amount did he receive the last week?

*Thursday, March 22, 2012 by Sim*

**statistics**

Calculate the z-score for each set of data. Determine who did better on her respective test, Tonya or Lisa. Student English Test Grade z-Score Student Math Test Grade z-Score John 82 Jim 81 Julie 88 Jordan 85 Samuel 90 Saye 79 Tonya 86 Lisa 82 Mean 86.50 81.75 St. Dev. 3.42 2...

*Thursday, March 22, 2012 by Anonymous*

**Spanish-2nd answer**

¿Qué hace los actores en la ópera de teatro? Los actores juegan unos papeles en la obra de teatro. ¿Qué pasa hacer la semana próxima? Voy a la escuela la semana próxima ¿Qué hiciste la semana pasada? Hice mi tarea la semana pasada.

*Tuesday, March 13, 2012 by Tiffany*

**4th grade math**

what is 5/6 of 288

*Monday, March 12, 2012 by zoe*

**4th grade math**

what is 5/6 of 288

*Monday, March 12, 2012 by zoe*

**Chemistry**

h2c4h4o4 + 2naoh --> 2h2o + na2c4h4o4 as for the previous question im sorry i forgot to plug the maleic acid in the formula properly. so this ones it ^ .2213 of c4h4o4 used (maleic acid) and .1 M NaOH 1. show the equation for 1st and 2nd ionization 2. find molecular mass of...

*Monday, March 12, 2012 by Ruby*

**Math - HELP !**

there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?

*Saturday, March 10, 2012 by Remy*

**1st grade**

I am helping my little sister. SHe is in the first grade and learning about Abraham Lincoln. Her questions are- 1. What year was Abe president. What year did he die. 2. How old was he when he died? 3. When did he marry ____. Who did he marry. 4. Who made the first flag? 5. ...

*Friday, March 9, 2012 by i.am..running.from.myself*

**4th grade**

mark knows his yard is 2 1/4 times as long as the width

*Thursday, March 8, 2012 by Anonymous*

**Math**

ln [5.01E-3] = ln(4.86E-2) - (1.80E-2s-1)(t s) Solve for t. t = 126 s First I did 4.86e-2 - 1.80e-2 and then on my calculator I pressed the 2nd button and then ln and got 1.031. Then I did the same thing to get the ln of 5.01e-3 and divided that by 1.031 but did not get 126 as...

*Thursday, March 8, 2012 by Hannah*

**6th Grade History**

What is the crucifixion?

*Monday, March 5, 2012 by running.from.myself*

**6th Grade History**

What was Jesus arrested and crucified for?

*Monday, March 5, 2012 by running.from.myself*

**6th Grade Geography**

Who ruled after Augustus?

*Saturday, March 3, 2012 by running.from.myself*

**1st grade math**

what addition fact can help you find 14-4? explain

*Wednesday, February 29, 2012 by ashley*

**Math for the middle school and elementary teacher**

A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both classes? Is the answer the ...

*Tuesday, February 28, 2012 by liz*

**4th grade**

8+4

*Tuesday, February 28, 2012 by Leena*

**8th grade math**

what is symbolic reasoning? Please help and explain. Thank you!

*Sunday, February 26, 2012 by saranghae12*

**stats**

20. The sponsor of a local soccer tournament is responsible for writing an article for the local paper announcing the 151, 2nd, and3rdplacewinners. If10teamsareinvitedtothe tournament, and the sponsor wanted to get the article written in advance so it can go out in the next ...

*Sunday, February 26, 2012 by tim*

**arithmetic**

An arithmetic n geometric sequence have the same first term 2.with the 2nd term x. the sum of the 3rd term of the AS is equal to the 3rd term of the GS. Give the first 3 terms of both sequences.

*Sunday, February 26, 2012 by simphiwe*

**8th grade math**

how would i graph this inequality? 14x-23<5x+13

*Thursday, February 23, 2012 by saranghae12*

**7th grade science**

definition of cell cycle

*Thursday, February 23, 2012 by saranghae12*

**7th grade health**

What does anemic mean?

*Tuesday, February 21, 2012 by saranghae12*

**stats**

The sponosor of a local soccer tournament is responsible for writting an article for the local paper announcing the 1st, 2nd, 3rd place winners.If 10 teamsare invited to the tournament, ans th sponsor wanted to get the article written in adance so it can go out in the next ...

*Monday, February 20, 2012 by tim*

**physics helpppp!!**

The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound

*Thursday, February 16, 2012 by joey*

**statistics**

2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade of the 92nd ...

*Thursday, February 16, 2012 by kabita*

**emergency physics**

The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound

*Wednesday, February 15, 2012 by joe*

**physics**

(ignore the other question i posted this is the right one) A rocket has a pre-ignition mass of 1100kg. On ignition it burns fuel at rate of 20kg s-1 producing a thrust of 10000N. How long after ignition of the fuel, will the rocket lift off? also explain how is it possible for...

*Wednesday, February 15, 2012 by beavis*

**physics**

A rocket has a per-ignition mass of 1100kgs-1 producing a thrust of 10000N. How long after ignition of the fuel will the rocket lift off? also explain how is it possible for a rocket to accelerate in space. (i cant work it outt. i know it involves the rocket thrust equation ...

*Wednesday, February 15, 2012 by beavis*

**3 grade math**

Is a trapezoid also a parallelogram? Explain why or why not.

*Tuesday, February 14, 2012 by Dk*

**6th grade science**

during which phase is DNA duplicated?

*Sunday, February 5, 2012 by kate*

**6th grade science**

what are the four phases of mitosis??? -------,-------,-------,-------

*Sunday, February 5, 2012 by kate*

**math for elementry school teacher**

Step 1st: 1 Box Step 2nd: 3 Boxes Step 3rd: 6 Boxes How many boxes in the 354th version? How many in the nth version?

*Sunday, February 5, 2012 by deadlove*

**10th grade Math --Shadow-Pull questions**

AC=12 Db=32 AD=x

*Sunday, February 5, 2012 by Mike*

**Reading**

What is a 6th grade definition for the word "Seraph"

*Monday, January 30, 2012 by Juliana*

**7th grade science**

What are mass extinctions?

*Sunday, January 29, 2012 by saranghae12*

**Physics (Wave Force)**

An archer must exert a force of 445 N on the bowstring shown in Figure (a) such that the string makes an angle of è = 34.0° with the vertical. (a) Determine the tension in the bowstring. _____________________________________ My answer was 420.525, but it is within 10% of the...

*Friday, January 27, 2012 by Anonymous*

**math**

3rd grade create an algorithm that has a difference of 20

*Thursday, January 26, 2012 by Ali*

**6th grade math**

how to solve w/3=17

*Sunday, January 22, 2012 by Isaiah*

**7th grade science ~ FOR MS. SUE**

Are plants organism? Please help!! Thank you!!

*Sunday, January 22, 2012 by saranghae12*

**12th Grade Calculus**

how will you multiply y = ae^3x + be^-2x with dy/dx = 3ae^3x - 2be^-2x

*Sunday, January 22, 2012 by Akash*

**math**

in 2nd year Adam owed $ 977.53, in the 3rd year he owed $ 1036.18 and in the 4th year he owed $1098.35 how much was the loan originally, and determine the future value of the loan after 10 years

*Thursday, January 19, 2012 by Annie*

**7th Grade English**

How did Bethany Hamilton show perseverance????

*Tuesday, January 17, 2012 by Laruen*

**12th Grade Health Class**

My butt is itchy, how can I scratch it?

*Monday, January 16, 2012 by Lilly*

**6th grade math**

1/4 * 1/2 =4D

*Monday, January 16, 2012 by kirsten*

**5 th grade algebra**

5a-a-2a=18

*Saturday, January 14, 2012 by kennady*

**4th grade math**

What are 3/7,1/9,and 2/3 all realated to?

*Thursday, January 12, 2012 by Ivana*

**Psychology**

This is part of a paper I am writing.....I need to write about this, however I am confused by the 2nd part of the question. What do you think they are looking for when they state how are we influenced by emotion, framing and narratives? What attributes are inherent in ...

*Tuesday, January 10, 2012 by BJ*

**math**

Sorry, Reiny, I copied the 2nd choice incorrectly. I had posted this problem with you before and the answer given that was not equalalent to A=1/2/bh was 2b =A/h. The problem is: A = 1/2bh, which is not equivalent? Choices: 2A =bh, h=2A/b, 2b=A/h, b=2A/h When I got my test ...

*Tuesday, January 10, 2012 by Jane*

**ap calculus ab**

for f(x)=lnx we know that f(e)=1. Use the tangent line at(e,1) to compute the tangent line approximation of f(3). what does the difference between the actual value and the tangent line approximation have to do with the concavity (2nd derivative) of the function at (e,1)?

*Sunday, January 8, 2012 by Jake*

**Hardwork I done already! :)**

7th Grade 7th grade Grades (1st quarter to 4th quarter): English 7 - 99 Math 7 - 91 Social Studies 7R - 91 Science 7R – 80 Fine Art 7 (advance art) – 100 Strings 7 – 100 Gym 7 and 8 – A GPA: 1st Quarter – 93.50 2nd Quarter – 3rd Quarter – 4th Quarter - Clubs/...

*Friday, December 30, 2011 by Laruen*

**Question**

I'M CURIOS SO DON'T JUST JUDGE ME AND BE RUDE i'M REALLY CURIOUS AND i FORGOT TO ASKED THIS QUESTION. DO NOT JUDGE ME!!!! Do I start taking SAT's and ACT's in grade 10th or 11th/12th grade???? I'm really curious.

*Friday, December 30, 2011 by Lauren*

**Statistics**

2. You are given the following data. Number of Absences Final Grade 0 93 1 90 2 79 3 66 4 60 5 56 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days. Show all ...

*Friday, December 30, 2011 by Lauren*

**pre-algebra**

find the product: (4k to the 5th power)(-2k)to the 3rd power. 5th power is inside the parenthesis and the 3rd is outside the parenthesis. Is it -32k to the 8th power or -32k to the 2nd power?

*Sunday, December 18, 2011 by Linda*

**math 6th grade**

How to write out 10 the negative 6?

*Wednesday, December 14, 2011 by Bob*

**math 6th grade**

How to write out 10 to the negetive two?

*Wednesday, December 14, 2011 by Bob*

**math 6th grade**

(1/2) to the 5th power= Need to know how to write this?

*Wednesday, December 14, 2011 by Bob*