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July 31, 2014

Homework Help: 3rd Grade

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SCIENCE(PHYSICS)
A train travels 40 km/hr for 0.2 hr, 50km/hr for next 0.2hr and 60km/hr for next 0.4 hr.calculate the average speed of train. My Solution:-1st hr. distance=40 multiplied by 0.2=8km 2nd hr.= 50 multiplied by 0.2=10km 3rd hr. =60 multiplied by 0.4=24 km Average speed=10+24+8 ...
Wednesday, May 25, 2011 at 6:35am

Chemistry
An electron ps from the 6th to te 3rd energy level in the hydrogen atom: a) calculate the wavelength b) calculate the frequency c) calculate te enrgy d) into which spectral series would the photon be grouped? (i really just need to formulas, then i could solve myself...)
Monday, May 23, 2011 at 9:52pm

criminal justice
Prepare a 6–8 slide PowerPoint presentation that addresses the following questions: •What are some of the ways that organized crime impacts you and a community and/or city (of your choice) directly? (This element will account for 20% of your grade.) •What are ...
Wednesday, May 18, 2011 at 1:03am

Maths
The 5th term of an exponential sequence is 4 and of 2nd term is 35(¡)find the 3rd term (¡¡)the 6th term (¡¡¡)the sum of the first 5th term?
Tuesday, May 17, 2011 at 1:24pm

physics
If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
Thursday, May 5, 2011 at 3:22am

Physics
If 7.00hp are required to drive a 1500-kg automobile at 66.0 km/h on a level road. What power is necessary to drive the car at 66.0 km/h down a 1.00 % grade? It requires 42.9 hp to drive the car at 66.0 km/h up a 10.0 % grade (a hill rising 10.0 m vertically in 100.0 m ...
Wednesday, May 4, 2011 at 3:38am

physics
Jessica weighs 540 Newtons, According to Newton's 3rd law, if the Earth pulls on Jessica 540 N, then Jessica pulls on the Earth 540 N acting in the opposite direction. If she trips while rollerblading, why will she fall to the ground
Monday, May 2, 2011 at 10:51am

math
There are 283 students in Walley's school and 59 of them are in the sixth grade. What is the approximate percent of student at Walley's school who are in the sixth grade
Wednesday, April 20, 2011 at 9:23pm

math
An average score of 90 or above in a history class receives an A grade. You have scores of 90, 89, and 85 on three exams. Find the range of scores on the fourth exam that will give you an A grade for the course. (Let N stand for your score on the fourth exam.)
Wednesday, April 20, 2011 at 9:22pm

3rd math
I need help placing in order from least to greatest. Is this right. I don't know which is the least. 27 cups = there is 8 oz in 1 cup (27x8 is 216 oz 2 gallons = there is 16 cups in a gallon (16x2) 9 quarts= there is 4 cups in 1 qt (9x4)
Tuesday, April 5, 2011 at 9:58pm

english
She gave birth to her first child by her uncle at age 14 in 1990. This is showing a sign of being raped. Does this works? The psychologist help Alesha to break through her issues by using cognitive-behavioral therapy. Is "to" necessary or should take it out? Or both ...
Wednesday, March 30, 2011 at 10:53pm

7th grade math
2x+7=4x+3 ? 3x+6=5x+1 ? 2n+6=8N+3 ? 6N+9=9n+6 ?
Sunday, March 27, 2011 at 7:42pm

grade nine polynomials
(3/4) (1/-2) + (5/6) (-1/3)
Sunday, March 27, 2011 at 3:46pm

alegebra
a 210 ft. long rope is cut into 3 pieces. the first piece of rope is 3 times as long as the second rope. the 3rd piece of rope is 2 times as long as the second piece of rope. What is the lenght of the longest piece of rope?
Friday, March 18, 2011 at 10:38pm

Second Grade Fractions
4/6 of 18 is ?
Thursday, March 17, 2011 at 12:21am

MATH
A track meet awards 6, 5, 4, 3, 2 and 1 points for 1st, 2nd, 3rd, 4th, 5th and 6th places, respectively. Team A’s only two runners originally earned 6 points in the first race with both runners finishing in the top 6, but then the winner of the first ...
Wednesday, March 16, 2011 at 2:18pm

English-writeacher
Hey, I just wanted to let you know that I got the grade back for that english paper you helped me write a few weeks back...the movie analysis on A Walk to Remember. I got a B! : ) But I have a chance to revise it according to the teachers comments and turn it in for a better ...
Tuesday, March 15, 2011 at 8:29pm

pre algebra
my grade is 83.17 in pre algebra in college, but the final exam is worth 300 points. If I got a B or B- or a C on the final, what would my grade be overall?
Thursday, March 10, 2011 at 9:20pm

5th grade math
3m=63
Tuesday, March 8, 2011 at 5:26pm

math
Girls are one-half of the fifth grade class.Two-tenths of these girls have red hair.Red haired girls are what fraction of the fifth grade class?
Wednesday, March 2, 2011 at 7:54pm

Geometric
1) The sum of last three terms of GP having n terms is 1024 time the sume of first 3 terms of GP. If 3rd term is 5. Find the last term. 2) The sum of the first eight terms of a GP is five times the sum of the first four terms. Find the common ratio.
Sunday, February 27, 2011 at 3:38am

Unix Script
"Using "if" statement checks for a file called "student.txt" in the current directory. Removes (deletes) the file if it exist. This file will collect last name, first name, and grade for 5 people. Use a while loop to get the information (last name, ...
Saturday, February 26, 2011 at 9:43am

Math Trivia
1) A school has 1-- closed lockers. Larry comes into the school and "toggles" every second locker, then Fred toggles every 3rd, Bob every 4th, etc, up to Zoe who toggles every 100th locker. After all this"toggling" how many lockers are open? 2) If you take ...
Monday, February 21, 2011 at 9:44pm

Chemistry-help needed
Can we use an ACS/AR grade chemical for UV spectrophotometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?
Monday, February 21, 2011 at 5:15pm

Chemistry-pls help
Can we use an AR grade chemical for UV spectrophotometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?
Thursday, February 17, 2011 at 2:39pm

Chemistry-help needed
Can we use an AR grade chemical for UV spectrometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?
Thursday, February 17, 2011 at 9:10am

6th grade science fair project
Each week up until fair time we have to turn in one aspect of our project. This week it deals with our conrol, dependent and independent variables and constants. I will tell you that I got my idea form sciencebuddies. My project is Ocean Currents: Modeling the 'Global ...
Wednesday, February 16, 2011 at 10:00am

Math
Frank has a 65% chance of receiving an A grade in geology, a 60% chance of receiving an A grade in mathematics, and a 77% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology and mathematics. I get: ...
Saturday, February 12, 2011 at 9:05pm

Statistics - can someone check me
Frank has a 65% chance of receiving an A grade in geology, a 60% chance of receiving an A grade in mathematics, and a 77% chance of receiving an A grade in geology or mathematics (or both). Find the probability that he receives A grades in both geology and mathematics. P(geo ...
Saturday, February 12, 2011 at 5:33pm

Math
I need help with these three math question. 1st question. What is the additive inverse of 5 on the 12-hour clock? 2nd question. What is the equivalent number on the 12-hour clock. -22 the choices for this question is, 5 or 2 or 3 or 1. 3rd question. I need to find the additive...
Saturday, February 5, 2011 at 9:10pm

Pre-Calculus
74. Road Grade When driving down a mountain road, you notice warning signs indicating that it is a "12% grade." This means that the slope of the road is -12/100. Approximate the amount of horizontal change in your position if you note from elevation markers that you ...
Thursday, February 3, 2011 at 4:48pm

algebra
A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this
Monday, January 31, 2011 at 4:54pm

6th grade math
what is 1/4*1/2=4d?
Sunday, January 30, 2011 at 12:12pm

statistics
if this are class scores and in one week i have bimodal distribution,another week a positive skew,3rd week a normal distribution and 4th week negative skew.what does this different scores tells you about thios tests , what is happening to the students scores overtime. what ...
Saturday, January 22, 2011 at 4:55pm

advance algebra
find three numbers such that the second is 6 less than 3 times the first , and the third is 2 more than 2/3 of the 2nd.The sum of the three numbers is 172. use x=1st number y=second number z= 3rd number please help...thanks a lot!!
Wednesday, January 19, 2011 at 5:56am

algebra
from our text book "Bittenger, M. L. & Beecher, J. A. (2007). Introductory and intermediate algebra (3rd ed.). Boston: Pearson-Addison Wesley" can someone please help me with "Review examples 2, 3, and 4 in section 8.4 of the text. •How does the author ...
Thursday, January 13, 2011 at 8:29pm

science
3 forces act concurrently on an object. First force acts 75 N north. 2nd acts 100 N east. 3rd acts 89 N at 15 degrees south of west. What is resultant force? b) what is equilibrant?
Monday, January 10, 2011 at 10:50pm

3rd math
The commutative, or order, property applies to which operations? A. Add & Multiply B. Subtract & Mutiply C. Add & Subtract D. Mutiply (we chose A - is this correct?)
Monday, January 10, 2011 at 8:38pm

6 grade math
Dividing 22/7 / 5
Monday, January 10, 2011 at 7:23pm

HELP MATH
lee looked at the results of an exam he had just given to his grade 2 math class. he saw that louise had a score of 95%. he also saw that the standard deviation for the test was 0. if arif was also in his grade 2 math class, what mark did arif get on the exam?
Thursday, January 6, 2011 at 3:12pm

Math 12
sum of 2nd and 5th terms of a geometric sequence is 13. the sum of the 3rd and 6th is -39. determine: a) the ratio "r" of the sequence b) the first term "a" of the sequence
Wednesday, January 5, 2011 at 5:25am

4th grade
IF R X R X R = 27 AND R X B = 6 WHAT IS THE VALUE OF B X B X B
Monday, January 3, 2011 at 7:44pm

4th grade
if b x w = 24, b x b = 16 what is the value of w x w?
Monday, January 3, 2011 at 6:42pm

law
Over the past decade, some countries have shown high crime rates while other countries have lower crime rates. For example, the lowest homicide rates in 2000 existed in Saudi-Arabia and Japan, while France and Germany had the highest homicide rates. Their rates, however, were ...
Sunday, January 2, 2011 at 7:27pm

law
What are some of the ways that organized crime impacts you and a community and/or city (of your choice) directly? (This element will account for 20% of your grade.) What are some of the ways that law enforcement agencies are working to reduce these types of organized crime in ...
Sunday, January 2, 2011 at 7:27pm

5th grade
7 5/12 - 5 7/12
Tuesday, December 14, 2010 at 5:38pm

Math 7th grade
40/n = 28/22 what is n?
Monday, December 13, 2010 at 11:20pm

11th grade
20xsquared+40 x+15=0
Monday, December 13, 2010 at 8:22pm

Math 8th grade
.02(2X-3)-0.03(3x(.2)=-.02
Sunday, December 12, 2010 at 8:06pm

fractions
Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!
Sunday, December 12, 2010 at 2:39pm

8th grade
Solve 3r + 18 ¡Ü 6r
Saturday, December 11, 2010 at 1:01am

10th grade
If ab=6y & bc=8y What is BD In Terms Of Y.??
Friday, December 10, 2010 at 2:05pm

7th grade
how do i solve a+3/5=24/25
Thursday, December 9, 2010 at 7:47pm

5th grade
What is the mode of these # 19,20,32,26
Wednesday, December 8, 2010 at 4:43pm

7th grade
2(2.5b-9) + 6b= -7 what is b
Wednesday, December 8, 2010 at 2:54pm

12th grade
How many moles are in 8.8*10 to the 34
Tuesday, December 7, 2010 at 6:25pm

10th grade
2x-y=-5 -2x-5y=11
Tuesday, December 7, 2010 at 1:47pm

6th grade
-20 / (-10)=
Tuesday, December 7, 2010 at 1:24am

6th grade
-17-(-5)
Tuesday, December 7, 2010 at 12:22am

math
franklin school has 3 boys for every four girls in the fifth grade. there are 140 students in the fifth grade. a.how many are boys? b.how many are girls?
Monday, December 6, 2010 at 7:24pm

6th grade
what is 30 1/4-29 1/3
Monday, December 6, 2010 at 4:26pm

Language Arts
I have to write a research paper for L.A. and it must be comepletely in 3rd Person. I have all the research information and how i am organizing the paper but i can't seem to figure out how to start it off. How can i write a good introduction?
Sunday, December 5, 2010 at 5:55pm

10th grade
if AB=3x-2 and BC=x+6, what is x?
Sunday, December 5, 2010 at 5:20pm

8 th grade math
2a+ab=c solve for a
Wednesday, December 1, 2010 at 10:24pm

Science (6th grade, but actual 7th grade paper)
We are learning about potential and kinetic energy. There are two ramps. One is short and the other is long. The long one is labeled A, and the short one is labeled B. On which one would a marble go the farthest after touching the ground?
Tuesday, November 30, 2010 at 6:37pm

Ashford SAP for FINANCIAL AID
I have read in the handbook about SAP.I pass 2 of 3 courses but my GPA IS 2.0 AS REQUIRED.My grade A- C+ and F which is 62.24%,since when has a grade of 62 is a F???? I know it is a D.If I am mistaken about what in the handbook for SAP so be it,but I am going to withdraw ...
Tuesday, November 30, 2010 at 2:44am

5th grade
what is 9 /24794
Monday, November 29, 2010 at 4:42pm

statistics
In one history class, 34 students took an exam. The mean of the exam was 52 with a standard deviation of 13. If the instructor is going to assume data are normally distributed and assign grades on a curve, then she will assign an A to the top 10% of the class, B's to the ...
Monday, November 29, 2010 at 12:35pm

math
did you know when you try to find the least commen multiple of 3 numbers you have to divide by two after you get your answer my class (ms.lott in texas) told us that for some reason its doubling the number so always divide by two once you have crossed out the commen numbers ...
Sunday, November 28, 2010 at 6:56pm

arithmetic
THE SUM OF THE 2ND AND 5TH TERMS OF AN A.P IS 42. IF THE DIFFERENCE BETWEEN THE 6TH AND 3RD TERM IS 12, FIND THE: COMMON DIFFERENCE, 1ST TERM, 20TH TERM.
Friday, November 26, 2010 at 5:41am

6th grade
What is 5/8 of 1/50?
Monday, November 22, 2010 at 8:45pm

Computer Programing & Logic Design
Submit pseudocode and a flowchart for the following programming exercise: Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Design the following functions ...
Saturday, November 20, 2010 at 9:35am

5th grade (thomas)
6 - m = 2 and 3/10
Wednesday, November 17, 2010 at 9:42pm

5th grade
6-m=2 3/10 would that be m=3 7/10 thank you.
Wednesday, November 17, 2010 at 9:33pm

5th grade
what number is 3/8 of 6?
Wednesday, November 17, 2010 at 9:21pm

algebra
Mixture Problems Template – Price Problems Copy the problem from the lesson: 1. A store manager wishes to reduce the price on her fresh ground coffee by mixing two grades. If she has 50 pounds of coffee which sells for $10 per pound, how much coffee worth $6 per pound ...
Wednesday, November 17, 2010 at 4:12pm

11th grade
Solve for x:9x^2-49=0
Tuesday, November 16, 2010 at 9:29pm

8th grade
(18 - (-4))divide (-11) (-4) + 2
Tuesday, November 16, 2010 at 5:26pm

4th grade algebra
What is 16 - 10 - 2 - 3 = ? What is 8 - 2 - 2 - 2 = ? What is 10 - 3 - 3 - 4 = ? What is 8 - 5 - 5 - 5 = ? What is 7 - 7 - 7 - 7 = ? What is 12 - 15 - 10 - 8 = ? What is 3 - 7 - 4 - 2 = ? What is 9 - 3 - 6 - 5 = ? What is 11 - 9 - 6 - 6 = ? What is 6 - 5 - 4 - 3 = ? What is 13...
Tuesday, November 16, 2010 at 1:22pm

world issues- amazon deforestation
Hi. I was assigned an essay that I have to get done by 2morrow. It is about Amazon rainforest deforestation. I have to sum everything up into 3 paragraphs. 1st paragraph- tell what's happening here; I already did this. 2nd & 3rd paragraphs- describe how you would stop ...
Tuesday, November 16, 2010 at 11:47am

Math
About 3/4 of the track team are girls. About 3/4 of these girls are in 8 th grade. What fraction of th e students are grade 8 girls? 1/3?
Sunday, November 14, 2010 at 9:08pm

9th grade
1+9a-8=8a
Sunday, November 14, 2010 at 8:34pm

8th grade math
7z - z
Saturday, November 13, 2010 at 5:44pm

PHYSICS-LAW OF THERMODYNAMICS
A dinner plate drops and breaks. This best illustrates the ______ law of THERMODYNAMICS A. 1st b. 2nd c. 3rd d. 4th I am inclined to say the 1st because energy can be neither created nor destroyed, it can only change forms. Thus the plate falling lost it's energy as a ...
Saturday, November 13, 2010 at 8:46am

5th grade
what is 1/5 of 10
Thursday, November 11, 2010 at 9:14pm

grade 1 math
wat iz 15-7?
Friday, November 5, 2010 at 11:33pm

math
The 1st web is twice as larger the 2nd web and the 3rd web is 3in longer then the 1st web 18in
Friday, November 5, 2010 at 1:05am

3rd grader math homework
please help with the below question writing in math Bethany has 40 apples. Write a subtraction story about the apples that would require regrouping. Then write the answer in a complete sentence. Thanks!
Wednesday, November 3, 2010 at 10:04pm

6th grade
What does 22x11= Thanks for your help!
Wednesday, November 3, 2010 at 9:43am

7th grade
4n+8=9n-7
Tuesday, November 2, 2010 at 12:36am

11th grade
x+y>1
Sunday, October 31, 2010 at 4:05pm

10th grade
BC=3x+2 and CD= 5x-10. Solve for x.
Saturday, October 30, 2010 at 5:51pm

6th grade math
How many 1/6s are in 1? How many 1/6s are in 1/2 ?
Wednesday, October 27, 2010 at 11:26pm

3rd homework
the water cycle lesson 2 how water changes and moves 1. ____________ water changes from a __________ to a _________________ 2. ____________ water changes from a _________ to a ________________ 3. _________________ Liquid water falls to the ground as _______________ * the water...
Wednesday, October 27, 2010 at 5:20am

3rd homework
the water cycle! lesson I water on earth type of water 1. ? where found 2. ? 3 ? 4 ? uses 5. ? 6. ? 7. ? 8. ? where found 9. ? 10. ? 11. ? uses 12. ? 13. ? 14. ? 15. where salt and fresh water meet is called an ? please help with the ?'s. I have no idea what to fill in. :-(
Wednesday, October 27, 2010 at 5:15am

3rd homework
think about how the word safe relates to dangerous. what words relate in the same way? safe: dangerous a) remove:add b) canyon:rim c) dangle:plank d) grip:jackhammer I am thinking "A" is the correct answer but unsure. Please advise. Thanks!
Tuesday, October 26, 2010 at 10:06pm

grade 9 algebra
8x-5y-x=9-y
Sunday, October 24, 2010 at 9:54pm

math
A math teacher calculates grades as follows:Grade=[2 test averages+quiz average/3] After 3 tests and 2 quizzes your test average is 83 and your quiz average is 89. You took your fourth test today and noticed that your overall average grade has dropped to an 83. What was your ...
Sunday, October 24, 2010 at 4:29pm

College Physics
A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final speed 43 mi/h)?. Additional: I know its a ...
Friday, October 22, 2010 at 5:58pm

AP Physics
A marble is dropped from a height of 10 m. A 2nd marble is rolled off a 10 m table at 5 m/s. A 3rd marble is fired at 5 m/s at an angle of 45 degrees off the table. Which one is going 15 m/s when it hits the ground?
Thursday, October 21, 2010 at 9:39pm

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