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July 24, 2014

Homework Help: 2nd Grade

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Physics/electricity
In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^-10 m. What is the effective current associated with this orbiting electron?
Sunday, October 6, 2013 at 11:42pm

Math
A 154-pound woman walks at 3.0 mph 0% grade for 5 min, runs at 5.5 mph 5% grade for 32 min. What is her total caloric expenditure?
Sunday, October 6, 2013 at 12:54pm

logical reasoning
how to write 2nd oct 2013 in 6 letters without using numbers
Thursday, October 3, 2013 at 1:31pm

Maths
The 14th term of an Ap is double the 4th term.find the 10th term if the 2nd term is 8
Wednesday, October 2, 2013 at 12:19pm

programming
Grades are assigned on the standard 90, 80, 70, 60 scale. You are to write an algorithm which will receive a student name and a percentage grade and display the letter grade to be awarded
Thursday, September 26, 2013 at 2:46am

Grammar Advisor
Are these correct? I mark my answer with an X. 88. The reason to list all of the preliminary (non-procedural) information in a lesson plan is to be sure have considered each aspect. keep good records for your future needs. be able to communicate clearly with administrators, ...
Wednesday, September 25, 2013 at 10:17pm

english
Can someone check my english essay. 700 words. I have English as 2nd language
Friday, September 20, 2013 at 12:19pm

7th Grade
I just wanna know anyone who's been in 7th grade what do you learn in science mostly throughout the year??
Monday, September 16, 2013 at 9:51pm

math 5th grade
Hunter school has a kindergarten and grades 1 through 6. there are 2 kindergarten and 2 classes in each grade. If the maximum class size is 25, what is the greatest number of students that could be in the school?
Thursday, September 12, 2013 at 8:09pm

Intermediate Algebra
for the polynomial function h(x)=2x to the 4th power-x to the 3rd power+2x to the 2nd power -4x-3 evaluate h(3)
Saturday, September 7, 2013 at 1:59pm

Intermediate Algebra
name the type of polynomial and give its degree for 7x to the 3rd power + 6x to the 2nd power -2=
Saturday, September 7, 2013 at 1:56pm

Algebra
The ages of three brothers are three consecutive even integers. If the sum of the 1st, four times the 2nd, and twice the 3rd is 86, what is the age of the oldest brother?
Saturday, August 24, 2013 at 2:58pm

Calculus-HELP PLZ !!!!
Find the complete general solution to the 2nd ODE: 9y'' + 9y' - 4y = 0
Monday, July 22, 2013 at 4:37pm

Calculus
Find the complete solution to the 2nd ODE: 2y''+3y'+y=t^(2)+3sin(t)
Thursday, July 18, 2013 at 6:15pm

maths
if tan theta= -13/12 where theta is in 2nd quadrant find remaing trigonometric ratios
Thursday, June 6, 2013 at 9:42am

math
in a geometric sequence the first term is 2. The 3rd term is the sum of the 1st and 2nd term. Find the ratio, and the 2 terms
Monday, June 3, 2013 at 9:12pm

Statistics
The accompanying data show the number of hours, x, studied for an exam and the grade received, y (y is measured in tens; that is, y = 8 means that the grade, rounded to the nearest 10 points, is 80). x 2 3 3 4 5 5 5 6 6 6 7 7 7 7 8 y 5 5 6 5 6 7 8 6 9 8 7 9 10 8 9 Maple ...
Sunday, May 26, 2013 at 10:05am

MATH HELP!!
How many ways can 12 horses in a race come in 1st, 2nd, and 3rd place
Friday, May 17, 2013 at 8:54pm

Physics helpp
Newtons 2nd law The force of earths gravity is about 10 N downward. Whats the acceleration of a 15kg backpack if lifted with a 15N force??
Tuesday, May 14, 2013 at 10:49am

Probability Math
A committee of four students will be selected from a list that contains six Grade 9 students and eight Grade 10 students. What is the expected number of Grade 10 students on the committee?
Tuesday, May 7, 2013 at 9:29pm

?
Let me see if I understand how to find your grade now. So this time if there are 60 questions and you miss 15 your grade would be a 72?
Tuesday, April 23, 2013 at 8:21pm

?
If there's 60 questions on a homework paper and you miss 10 what would your grade be? I forgot how to find out your grade.
Tuesday, April 23, 2013 at 7:17pm

Geometry
The grade of a road or a railway road bed is the ratio rise/run, usually expressed as a percent. For example, a railway with a grade of 5% rises 5 ft for every 100 ft of horizontal distance. 1. The Johnstown, Pennsylvania, inclined railway was built as a "lifesaver" ...
Monday, April 15, 2013 at 5:23pm

chemistry
Please i tried to give this answer on a quiz but it was not accepted. To name this alkane: CH3CH2CH2CHCH3 with a substituent of CH3 on 2nd carbon.
Thursday, April 11, 2013 at 1:05am

Chemistry - DrBob Help!
Draw product for chlorination of 2methylbutane through a 2nd radical
Wednesday, April 10, 2013 at 12:26am

Math
Factor the trinomial completely. y to the 3rd power minus 14y to the 2nd power plus 48y
Thursday, April 4, 2013 at 3:30pm

physical science 2nd semester
what is the reactant in this equation ?2HBr(aq)+ca(OH)2(aq)-->2H2O(i)+CaBr2​(aq)
Tuesday, April 2, 2013 at 12:09am

5th grade math
how do i convert milligrams to grams- i am in fifth grade-easiest way please.
Thursday, March 28, 2013 at 9:25am

English
Why should grade 8 students have to do volunteer hours to graduate grade 8? Please provide me with atleast 6 points and so I can expand on it. Your help is very much appreciated!:)
Saturday, March 23, 2013 at 5:38pm

algebra 2nd try
I need to simplify this 2/∛49 . I figured it out to be (2∛((49)^2))/49 but the system I added my answer to says this is incorrect. Please help me! Thanks anyone.
Saturday, March 23, 2013 at 5:33pm

Math (algerba 1)
(4 X 10 to the -5th power) to the 2nd power. How would I solve this?
Wednesday, March 13, 2013 at 7:20pm

CHRIST MATH
Divide 20 into 4 parts which are in AP such that ratio between the product of the 1st part and the 4th part to the 2nd and 3rd part is 2:3 find the AP
Tuesday, March 12, 2013 at 7:01am

ALL subjects..
Hi!! Well,I'm in tenth grade And I was wondering if there are any practice test websites for the 10th grade Test.. I believe Pct? Please!! Help..
Friday, March 8, 2013 at 8:22am

help
can someone help me with the pythagorean theorem? VERY HARD IM IN 7TH GRADE AND THIS IS SOME 7TH GRADE MATH HOMEWORK THAT I NEED HELP WITH!!!!!!!!!!!
Thursday, March 7, 2013 at 5:26pm

maths
The mean grade of 10 students was 72.if 2 of the students with grades of 53,75 are cancelled. What should be the mean grade of the remaining?
Wednesday, March 6, 2013 at 8:57pm

Math
Write the following number in standard form (4X10 4th power)+(3X10 3rd power)+(2X10 2nd power)+(5X1)=
Tuesday, March 5, 2013 at 9:41pm

Urgent
draw an angle x in the 1st quadrant with sinx=3/5, and an angle y in the 2nd quadrant with cosy=-12/13, then determine the exact value of tan(x+y).
Friday, March 1, 2013 at 12:46pm

Similarity
What is one similarity between 4th grade and 5th grade?
Wednesday, February 27, 2013 at 8:53pm

writing
For my writing, it has to be a three paragraph essay.I have to include 2 differences and 1 similarity about 4th grade vs. the 5th grade. How do I start my paragraph?
Wednesday, February 27, 2013 at 8:11pm

Trigonometry
Mountain Descent A road sign at the top of a mountain indicates that for the next 4 miles the grade is 12%. Find the angle of the grade and the change in elevation for a car descending the mountain.
Monday, February 4, 2013 at 1:45am

MATH
In Marissa's Calculus course, attendance counts for 5% of the grade, quizzes count for 15% of the grade, exams count for 60% of the grade, and the final exam counts for 20% of the grade. Marissa had 100% average for attendance, 93% for quizzes, 82% for exams, and 81% on ...
Sunday, January 27, 2013 at 8:27pm

math
a boat travels at 16 knots 1st leg: 6hr @ S63W 2nd leg: 4hr @ N10E find time and bearing back to port
Wednesday, January 23, 2013 at 11:44am

math
I need to solve this problem. A teacher can grade 25 papers in 4 hours. How many papers can he grade in 6 hours?
Tuesday, January 22, 2013 at 5:58pm

maths
if sinx=3/5,cosy=12/13,where x and y both lie in 2nd quadrant, find the value of sin(x+y),cos(x-y),tan(x+y)?
Tuesday, January 15, 2013 at 12:19am

Statistic- Average
A mean average of 60 on 6 exams is needed to pass a course. on his first 5 exams, Adam received grades of 46,73,73,63 and 70. If the lowest grade of the exams already taken is to be dropped, what grade must he receive on his last exam to get a C in the Course?
Monday, January 7, 2013 at 6:23pm

Geometry
What is the equation of a line through (-2,5) and whose segment intercepted between the axes in the 2nd quadrant is 7sqrt2? Please help me solve this
Monday, January 7, 2013 at 5:05pm

math
A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
Monday, January 7, 2013 at 2:02pm

math
if 40 percent of my grade is at a 97 percent average and 40 percent of my grade is at a 92 percent average and my final test is worth 20 percent of the grade then what do i have to score on my final test to have a grade of 91.5 percent or better?
Tuesday, December 18, 2012 at 10:21pm

Grading
How do you find out what your grade is on a paper? For example if there is 70 questions and you miss 10 how do you find out what your grade is? Do you subtract 70 and 10 and when you get your answer you divide it by 100?
Tuesday, December 18, 2012 at 7:28pm

Math ave grade
a student scores 76,82,83 on the first three test, she has a 92 homework averge. if the final exam is 50% of grade and homework is 10% and the test average (nit including the final) is 40% then what grade should she get on the final exam to get a 87.5 in the class?
Sunday, December 16, 2012 at 11:59pm

math
-25 plus 4 to the 2nd power times 3 minus 5 to the 3rd power
Wednesday, December 12, 2012 at 6:48pm

5th grade math (word problems)
I didn't see an answer from yesterday, so resending. Also, is there a website to explain how to solve word problems - like key phrases to look for (ex: 'in all' - add; 'what's left' - subtraction)? Here's question from yesterday: sorry,but I don'...
Wednesday, December 12, 2012 at 7:01am

5th grade math (word problems)
sorry,but I don't understand word problems - like what formula/expression to use. Here's the 1st problem: Rob practiced 3/5 of his music in 25minutes. About how long does it take to practice all of his music? I know that Rob has 2/5 left of music to practice. So, do I ...
Tuesday, December 11, 2012 at 4:22pm

math
student got 25 questions correct did not pass,2nd attempt got 36 correct what was percent increase show how solved
Wednesday, December 5, 2012 at 9:51pm

Math 8R - HW Qs. Check
Write the product of (1.7 x 10 to the 9th power) x (1.4 x 10 to the 2nd power) in scientific notation My Answer - 2.38 x 10 to the 11th power am i correct and please reply this post
Sunday, December 2, 2012 at 4:51pm

Computer Science (Programming Logic And Design)
Create a program that outputs a letter grade for a student based on the following table:  From To Grade  90 100 A  80 89 B  70 79 C  0 69 F  I dont understand how to do this. Would you mind helping me get the answer to this Program?
Sunday, December 2, 2012 at 2:18pm

Computer Science (Programming Logic And Design)
Create a program that outputs a letter grade for a student based on the following table:  From To Grade  90 100 A  80 89 B  70 79 C  0 69 F  I dont understand how to do this. Would you mind helping me get the answer to this Program?
Sunday, December 2, 2012 at 2:18pm

Programming (CSI 150 Programming Logic and Design)
Create a program that outputs a letter grade for a student based on the following table:  From To Grade  90 100 A  80 89 B  70 79 C  0 69 F  I dont understand how to do this. Would you mind helping me get the answer to this Program?
Sunday, December 2, 2012 at 2:14pm

Programming (CSI Programming Logic and Design)
Create a program that outputs a letter grade for a student based on the following table: From To Grade 90 100 A 80 89 B 70 79 C 0 69 F I dont understand how to do this. Would you mind helping me get the answer to this Program?
Sunday, December 2, 2012 at 2:10pm

math
If sinx=3/5,cosy=-12/13,where x and y both lie in 2nd quad.Find the value os sin(x+y).
Tuesday, November 13, 2012 at 2:06pm

math
Hannah's grade on her last math test was 4 points more than Mark's grade. Write an expression for Hannah's grade, using m as a variable. Evaluate the expression if m=92.
Sunday, November 11, 2012 at 9:48pm

Math Statistics
Kesha's mean grade for the first two terms was 74. What grade must she get in the third term to get an exact passing average of 75?
Tuesday, November 6, 2012 at 4:15am

Math Statistics
Kesha's mean grade for the first two terms was 74. What grade must she get in the third term to get an exact passing average of 75?
Tuesday, November 6, 2012 at 4:14am

Maths
Find three no. Such that,the 2nd is twice the 1st,the 3rd is three times the first and their sum is 180. Ans is 30,60,90
Friday, November 2, 2012 at 10:02pm

math
the manager of a starbucks store plans to mix A grade coffee that cost 9.50 per pound with grade B coffee that cost 7.00 per pound to create a 20 pound blend that will sell for 8.50 a pound. how many pounds of each grade coffee are required?
Tuesday, October 30, 2012 at 8:32am

SS8R - (2nd question) help!
business rockefeller control???????? i only thing I know is that he formed a Standard Oil Company.... does that count is there any other business he control (looked up on wiki, not there...)
Tuesday, October 23, 2012 at 9:25pm

Social Studies 8R (2nd question)
Why do some call him a Capatain of Industry? Now for this question I know why, is because since he a industrialist, he controlled many railroads. He was on of the richest man in america. right????
Tuesday, October 23, 2012 at 8:58pm

Social Studies 8 - help!!!!! (2nd question)
What organizations or buildings named after cornelius vanderbilt? So far I only got Vanderbily University is there anything else????? I google it and that's all it gave me please help me!!!!!
Monday, October 22, 2012 at 8:42pm

Health 8 (2nd question)
Describe the effects of alcohol Answer - There were 283 deaths recorded as alcohol-related and could cause blackouts, memory loss and anxiety. Am I correct and is my answer is good????
Monday, October 22, 2012 at 7:39pm

business statics
a random sample of the grade of 78 students is taken. what is the probability that the average grade will be between 80.3% and 82.3%?
Sunday, October 21, 2012 at 8:21pm

algebra
how do I evaluate 2x to the 4th power + 2 x to the 3rd power + x to the 2nd power when x + 7
Thursday, October 18, 2012 at 8:19pm

Math
Jessie’s average grade in Algebra for the first two terms is 73.5. What grade must he get in the third term to have an average of 75?
Wednesday, October 17, 2012 at 8:11pm

science
Is venus the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th smallest planet?
Tuesday, October 9, 2012 at 4:53pm

algebra 2
i'm trying to solve this system of equations with 3 variables 5a-b+3c=5 2a+7b-2c=5 4a-5b-7c=-65 i tried to make the first equation like a=something so i could substitute it in to the 2nd equation, however i get decimals so it doesnt work how do i do this problem?
Sunday, October 7, 2012 at 1:29pm

3rd Grade Math
There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class? How can I explain this to my 8yr old in 3rd grade? I've got myself so confused in the process of trying to figure ...
Tuesday, October 2, 2012 at 5:57pm

Math
This isn't a question for math homework but i have a really low grade in math and i want to raise it up. What can i do to get my grade up because i am getting progress reports on Monday and i want to get a really good grade.PLEASE HELP!!!!
Thursday, September 20, 2012 at 8:59pm

math,social studies and heaalth
I am in middle school and I want to know what my grade point average is. Do you know any websites where I can calculate my grade point average. Thanks.
Wednesday, September 19, 2012 at 3:53pm

physics
A car coasts (engine off) up a 30 degree grade. If the speed of the car is 25m/s at the bottom of the grade, what is the distance traveled by the car before it comes to rest?
Sunday, September 16, 2012 at 5:06pm

Database
Following report shows a grade report that is mailed to students at the end of each semester. Prepare an E-R diagram reflecting the data contained in the Grade Report. Assume that each course is taught by one instructor. MILLENIUM COLLEGE GRADE REPORT FALL SEMESTER 199X NAME: ...
Sunday, September 16, 2012 at 12:37am

Database
Following report shows a grade report that is mailed to students at the end of each semester. Prepare an E-R diagram reflecting the data contained in the Grade Report. Assume that each course is taught by one instructor. MILLENIUM COLLEGE GRADE REPORT FALL SEMESTER 199X NAME: ...
Saturday, September 15, 2012 at 10:58pm

7th grade science
I did my calculations wrong and now Im going to get a bad, bad, bad grade on my lab report I need to know what how to find the highth and width and radius of several things are help me plz!!!!
Saturday, September 15, 2012 at 5:33pm

algebra 1
place parenthesis so answer = 14. 2x2+3 to 2nd power-4+3x5.
Friday, September 14, 2012 at 2:25pm

Soc studies
What are the differences between the 1st and 2nd continental congress and their outcome?
Tuesday, September 11, 2012 at 9:14pm

7 th grade math
hey i need to new what it the answer for this question 35 fewer than 168 and this is 7 th grade math so plz tell me thanx
Monday, September 10, 2012 at 10:31pm

physics
If a radioactive isotope has a half-life of 1 year, how much of the original sample will be left at the end of the 2nd year?
Thursday, August 23, 2012 at 9:50am

geography
which country is the biggest (mongolia,china,southkorea,north korea,japan? p.s. i am 8 yaers old and going to 4th grade so use 4th grade words so thank you but no thanks to the geeks. sincerely, cesia xoxo
Tuesday, August 21, 2012 at 11:06am

math
Your company can make x-hundred grade A tires and y-hundred grade B tires a day, where 0≤x≤4 and y= (40-10x)/(5-x). The profit on each grade A tire is twice the profit on each grade B tire. Assuming all tires sell, what are the most profitable numbers of tire to make?
Tuesday, August 7, 2012 at 5:16am

math
Ms. Sue are you able to break 3/4ft.= how many inches for a 2nd. grader.
Thursday, August 2, 2012 at 9:23pm

programming
write a flowchart program which shows persentes of 4 student 1st 2nd 3rd 4th meximum nd minimum?
Monday, July 30, 2012 at 10:42pm

calculus
Use the 2nd derivative test to find the extremer of f on the interval [0,2PI] f(x)=2cosx+sin 2x
Friday, July 6, 2012 at 9:26pm

National Junior Honor Society
Since I'm in the NJHS. Is there any community service hours ideas because the advisor will give us community service hours sheet. Just to let you know I'm going to the 8th grade. My goal is to complete 300 community service hours. Is there any sites that have list of ...
Wednesday, July 4, 2012 at 4:02pm

math
mike has an average of 89 on the five tests he has taken so far this semester. what grade must mike earn on the next test to raise his average grade exactly to 90?
Tuesday, May 29, 2012 at 5:38pm

math
Identify -7x^3+6x^2+6x+9 1st, 2nd, 3rd, and 4th terms. Thanks
Saturday, May 5, 2012 at 2:06pm

calculus
1. A hill with a 35 degree grade (incline with horizontal) is cut down for a roadbed to a 10 degree grade. If the distance from the base to the top of the original hill is 800 ft., How many vertical ft will be removed from the hill rounded to the nearest ft
Monday, April 30, 2012 at 7:34pm

math
(8x to the 3rd power) (4x to the 2nd power) simplifi
Thursday, April 26, 2012 at 6:13pm

science fair
I need a science fir project!! I looked on a thousand of websites online but they give no interesting idea. I am in 6th grade and i need something at a 6 grade level that is easy a science fair project that is do in 1 week. i am in 6 grade and i don't need experiments ...
Thursday, April 26, 2012 at 5:18pm

physics
When an electron jumps from the 4th orbit to the 2nd orbit which series line does it get?
Thursday, April 19, 2012 at 10:46am

chemistry
How is it possible for a chemical rxn to be highly spontaneous and have a negative entropy value? Isn't this inconsistent with the 2nd law of thermodynamics?
Friday, April 13, 2012 at 10:56am

6th grade credits
how many credits does a 6th grader in oklahoma need to pass into 7th grade?
Thursday, April 12, 2012 at 12:00pm

Calculus I
Find the derivative ** (sq root) y = (square root) x + (2nd sq root) x + (3rd sq root) x ** All the x's is under three sq roots y' = 1/2(sq rt) x + 1/(sq rt) x + 3/2(sq rt) x Is this right?
Tuesday, April 10, 2012 at 11:16am

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