Thursday
January 29, 2015

Homework Help: 10th Grade

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7th grade
what is -2(-3) squared
Monday, September 29, 2008 at 7:18pm

grade 8 math
At the annual Grade 8 ski trip, for every 2 students who skied, 3 snowboarded. Ninety-six students snowboarded. How many students skied? Show your work. Can someone help???
Sunday, September 28, 2008 at 7:49pm

language arts
I have to put together and present a strategy that is effective in the teaching of language arts at a specific grade level. What would a good idea be for around the grade 2 level? and why is it important?
Saturday, September 27, 2008 at 11:36pm

Grade 3 (transporatation)
I am doing a unit on public transportation in New York city for my 3rd grade class and I am having a little trouble finding interesting and fun websites that my students could use to get information on past and present types of public transportation. Do you know any website/s ...
Saturday, September 27, 2008 at 8:33pm

9th grade
how does ozone form?
Monday, September 22, 2008 at 6:24pm

7th grade
what is another word for understand
Tuesday, September 16, 2008 at 5:33pm

6th grade math
What is 2 x (4 to the power of 2) - 12 + 5 ?
Tuesday, September 16, 2008 at 2:15am

9th grade
how earth rotates?
Sunday, September 14, 2008 at 11:35am

5th grade
how do you do a paragraph paw
Thursday, September 11, 2008 at 11:01pm

math
polk elementry school has three classes for each grade level, kindergarten through fifth grade. If there is an average of 27 students how many students attend polk elementry school?
Wednesday, September 10, 2008 at 5:33pm

2nd grade
what is the synonym for brown?
Tuesday, September 9, 2008 at 6:13pm

trig
in an algebra class of 21 students the mean grade on a test was 87; in another class with 32 students the mean grade was 81. What is the combined mean of the two classed? my teacher said it's 21 * 87 + 32 * 81/53= 83.4 but i'm not sure where the 53 came from.. thanks ...
Monday, September 8, 2008 at 9:13pm

trig.
in an algebra class of 21 students the mean grade on a test was 87; in another class with 32 students the mean grade was 81. What is the combined mean of the two classed? my teacher said it's 21 * 87 + 32 * 81/53= 83.4 but i'm not sure where the 53 came from.. thanks ...
Monday, September 8, 2008 at 8:24pm

6th grade
What was a mansion like in the 80's
Monday, September 8, 2008 at 7:43pm

6th grade math
A+B = A-B what are A and b
Sunday, September 7, 2008 at 10:20pm

5th grade
how many thousandths are in a hundredth?
Sunday, September 7, 2008 at 8:58pm

11th grade
what exactly is chemistry?
Thursday, September 4, 2008 at 5:33pm

9th grade
what is social health?
Thursday, September 4, 2008 at 3:25pm

9th grade
whatis 1=1
Tuesday, September 2, 2008 at 3:10pm

4th grade
what is 7 d in w
Friday, August 29, 2008 at 10:42am

math grade 12
solve for n if P(n,3)=2c(n,2), n{N
Thursday, August 28, 2008 at 8:03pm

5th grade
i need help with factors
Tuesday, August 26, 2008 at 8:25pm

Help Help
Consider the following selection statement where X is an integer test score between 0 and 100. input X if (0 <= X and X < 49) output "you fail" else if (50 <= X and X < 70) output "your grade is" X output "you did OK" else if (70 <...
Wednesday, June 11, 2008 at 4:54pm

programming
Can You Please help me understand how to do this and what i have to do to solve the problem.... Please!! Consider the following selection statement where X is an integer test score between 0 and 100. input X if (0 <= X and X < 49) output "you fail" else if (50...
Wednesday, June 11, 2008 at 4:53pm

grade 5 math
the grade 5 class decided to collect cans of food to donate to the food bank .After the 1st week ,they had collected 8 cans . The next week they collected 11 more . By the 3 rd week they had 31 cans Following this pattern how long will it take for them to reach there goal of ...
Sunday, May 4, 2008 at 9:47pm

6th Grade Math
I really don't know what to do on this question. If someone could start me off I could probably get the answer. Remember I am in 6th grade. Dani has a sack of 50 pens. Of these, 10 are black, 15 are blue, and the rest are red. If she grabs a handful of 5 pens, how many ...
Monday, April 21, 2008 at 7:19pm

math word problem
30 park visitors who played the same three games-the softball pitch, dart throw, and the ring toss. Every 5th person won at softball, every 10th person the dart throw, and every 15th person, the ring toss. How many of the 30 players won all three games?
Thursday, March 27, 2008 at 5:29pm

proofread
Hi, can someone proofread this for me. I'll appreciate it. Thanks in advance. The practicum site I selected is an elementary school. I will be assisting a first grade teacher during the semester. I will be helping her with her students and with other teacher ...
Sunday, February 3, 2008 at 11:34pm

Math
Can i please get your help on fractions and i am in the 7 th grade
Wednesday, January 30, 2008 at 5:49pm

7th grade geometry
pr/ac = ?/cb pr=6,ac=?, cb=15
Monday, January 28, 2008 at 6:52pm

Grade 10 MATH
17^115
Wednesday, December 5, 2007 at 7:56pm

essay please check writeacher
Describe the world you come from- for example, your family, community or school -- and tell us how your world has shaped your dreams and aspirations Being the first in my family to attend college is not so easy. There has never been anyone at home to help or to guide me. I did...
Thursday, November 29, 2007 at 12:57am

Chemistry
can anyone help me on my chemistry problem. i need a merck index to solve this. i have a PH of 10.7 and the nearest solution that is near to it is 10.32. The solution that is 10.32 is NaHCO3. i subtract both of them to get the ratio of log (HA)/(A-). i took that value to the ...
Thursday, October 18, 2007 at 8:41pm

algebra
Sam must have an average of 70 or more in his summer course to obtain a grade of C. His firs three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade.
Wednesday, October 10, 2007 at 12:50am

math
An instructor counts homework as 1/3 of the student's grade and the final exam to be 2/3 of the student's final grade. Going into the final exam a student has a homework grade of 48%. What range of scores on the final exam would put the student's final average ...
Sunday, September 30, 2007 at 8:08pm

Social Studies
How do you start a community? Please explain your question. Are you asking about how to start a town of people? Or a community of crayfish? Or a special interest community, such as a club or a church? We'll be glad to help you if you clarify your question. We are asking ...
Thursday, August 16, 2007 at 7:01pm

physics-please check
is this right?: when a form of energy changes from one form to another some energy may transfrm into a useful form, those useful form of energy is high grade energy.while the rest of the energy will always change to form we cannot use.which is called the low grade energy. if i...
Monday, May 14, 2007 at 4:46am

MATH!!!
To measure the length of a hiking trail, a worker uses a device with a 2-foot diameter wheel that counts the number of revolutions of wheel makes. If the device reads 1,100.5 revolutions at the end of the trail, how many miles long is the trail, to the nearest tenth of a mile...
Sunday, May 13, 2007 at 5:23pm

algebra
Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. write an inequality representing the score that sam must get on the last test to get a C grade http://www.jiskha.com/display.cgi?id=116​...
Tuesday, April 24, 2007 at 11:47pm

1st grade math please help!!!
8...
Tuesday, April 24, 2007 at 10:29pm

trig
it says solve for all real solutions, compute inverse functions to 4 sigfigs. cos^2x=3-5cosx Devon, what grade level are these questions from? I am having the same problems as with your 9:14 post. Please see my partial solution in the post to bobpursely at 10:54 Devon, I have ...
Monday, April 16, 2007 at 9:57pm

Social Studies
They can be 2-5 paragraph essays, not looking for excellent work just easy essays to turn in...if i dont do these i dnt pass my senior year, this is make-up work from 10th grade .. Essays i need done: -Charcter analysis of an epic hero(essay and sketch). -What is the role of ...
Friday, March 23, 2007 at 3:09pm

Math
Are you trying to solve for x, n or p? solve for n Show me how to work this problem. 2n = 4xp - 6 what is the problem? what grade r u in iam in 6 grade To get n all by itself, you need to divide by 2. But if you divide by 2 on the left, you have to divide by 2 on the right...
Wednesday, March 14, 2007 at 8:22pm

chemistry
Can someone please help me with this problem? An iron nail placed in a beaker with a solution of silver nitrate will cause pure silver to collect on the bottom of the beaker. Write a balanced equation for the reaction that occurs. This is what I have so far: Fe + AgNO3 --->...
Wednesday, February 28, 2007 at 10:20pm

math
Derivatives are usually not taught in 5th grade. That is what your question is about: Rates of change. Complete the following statements with the correct words Note: Correct spelling is important. If s(t) is a distance (or height or position) function, then s'(t) would be ...
Monday, February 19, 2007 at 10:00pm

math
how do you do fractionation? huh??/ What grade are u in?
Wednesday, February 7, 2007 at 7:19pm

Chemistry
If 100mL of 1mol HCL is mixed with 100 mL of 1mol NaOH, a temp rise of 6.2C occurs. What temp change will be obserbed, if under the same conditions, 10mL of 1mol NaOH is mixed with 10mL 1mol HCL? x Why wouldn't it be the same? One gets 1/10 th of the heat, but has only 1/...
Thursday, February 1, 2007 at 8:33am

Math Help Please (I Am New In This Website)
How do you multiply 367 by 72? the answer depends on your grade. Tell us what Grade in School you are in. Multiply 367 by 2; write down the answer. Multiply 367 by 70; add it to the answer above. Let us know what your answer is and someone here will give you feedback.
Saturday, January 27, 2007 at 7:55pm

Math, Geometry and Physics
An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 300 meters from the peak, what ...
Tuesday, January 16, 2007 at 10:40am

math,correction
can someone correct this for me please. Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C ...
Tuesday, January 9, 2007 at 7:38pm

math correction
can someone correct this for me.or teach me if i'm wrong Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last...
Monday, January 8, 2007 at 1:45pm

Algebra1234567890!
(-mn8)3 would it be: -m^3n^3164 (-mn8)3 = -24mn Without carrots I have no idea where your exponents are. how?I don't get this one? Is this Sandro from Mrs.Pfeiffer's class?What grade are you in? Leo is saying you need to use carets to show an exponent. As you have ...
Wednesday, November 8, 2006 at 5:44pm

Noiuns
Our son's 3rd grade teacher gave out a homework assignment which had the students make a sentence for each of their spelling words and then circle the "noun" in the sentence. We received his homework back from the teacher with the words, "I, you, He", ...
Wednesday, October 25, 2006 at 7:25pm

physics
I'm supposed to design a device that will protect a raw egg, GRADE A, (not that its really important to know what kind of egg it is... LOL) But, it will drop from a 12 FOOT height to a concrete floor. The only materials that I'm allowed is about 9 sheets of "8.5 X...
Friday, October 13, 2006 at 11:20am

Language Arts
I left my McMillian text book for language arts in school today and I have homework on page 2 and 3. I'm in the 6th grade does anyone have that book. I really really need those questions. I don't know if this gives page numbers that correspond with your text or even if...
Monday, September 11, 2006 at 5:04pm

math question
hi, i have a math question that i need help with: when data are non-numerical but can be ordered, such as letter grades, the mean cannot be calculated directly; but both the median and mode can be found. Last year in Ms. Flag's history course, the final grades were 8A'...
Tuesday, August 29, 2006 at 3:17pm

Math 6 grade
If you need to find the percent of a number, explain how you can predict whether the part will be less than, greater than, or equal to the number. HELP PLEASE
Wednesday, January 28, 2015 at 7:06am

math 4th grade
llene is making smoothies. The recipe calls for1 1/4 cups of strawberries. How many cups of strawberries, written as a fraction greater than one, are used in the recipe?
Tuesday, January 27, 2015 at 9:23pm

Algebra (6th grade)
I need help on the algebra with pizzazz worksheet page 8 Objective 1-h. Need the answers to letters O-R or just the puns answer straight out please! ^_^
Tuesday, January 27, 2015 at 4:24pm

4th grade math
A frog made 3 jumps. The first was 12 5/6 inches. The second jump was 8 3/6 inches. The third jump was 15 1/6 inches. What was the total distance the frog jumped?
Sunday, January 25, 2015 at 11:02pm

math 2nd grade
Write a sentence using words that compares the crayons in the two boxes
Sunday, January 25, 2015 at 9:33pm

math
my sun in thea 1st grade me no understand to much english i need very much help what is 9+10=??? me having very hard time help asap
Saturday, January 24, 2015 at 2:39pm

6th grade math
how can i put fractions and decimals in greatest to least or least to greatest?
Friday, January 23, 2015 at 1:22am

math
how is GCF and LCM different? im in 4th grade and i tried to understand but my mum said shes not sure so please i need help
Thursday, January 22, 2015 at 5:54pm

. 8th grade math
. Mkay ! So, one molecule of nitrogen reacting w/3 molecules of hydrogen makes 2 of ammonia. How many molecules of nitrogen must react w/42 molecules of hydrogen to make 28,of ammonia?
Wednesday, January 21, 2015 at 10:54pm

maths lit, history, geography, life sciences and L
Am in grade 10 and those are the subjects i want to choose so can i become a psychologist with those subjects in the future??
Wednesday, January 21, 2015 at 9:05am

Analytic chemistry
A solution of HClO4 was standardized by dissolving 0.3745 g of primary standard grade HgO in a solution of KBr. The liberated OH- required 37.99 mL of the acid to be neutralized. Find the molarity(M) of HClO4. The given balanced chemical equation is: HgO + 4Br- + H20 ===> ...
Wednesday, January 21, 2015 at 8:17am

Science- urgent-review
what type of galaxy do astronomers consider to be the oldest? It's urgent because I am studying for a grade 9 exam but I dont know what this is.. please help.
Tuesday, January 20, 2015 at 6:47pm

math
James needs to bring his grade up to a B (80) in reading. What does he need to get on his next quiz? Quiz 1:77 Quiz 2:81 Quiz 3:74 Quiz 4:?
Monday, January 19, 2015 at 9:50pm

grade 7 math
Uniform Motion Related Problem Jessie has a 15 km head start on Melvin. How long will it take Melvin to catch Jessie if the latter travels at 70 kph and the former at 100 kph?
Monday, January 19, 2015 at 11:57am

grade 7 math
Uniform Motion Related Problem Two planes leave an airport at 2 p.m., one flying south at 450 kph, the other flying north at 675 kph. At what time will they be 3 600 apart?
Monday, January 19, 2015 at 11:54am

grade 7 math
Uniform Motion Related Problem Two cars starting from the same point travel in opposite directions. Car A travels at 80 kph and car B at 110 kph. After how many hours will the cars be 760 km apart?
Monday, January 19, 2015 at 11:51am

grade 7 math
Uniform Motion Related Problem Two cars, 210 km apart, met each other in 2 hours. If one car travelled at 60 kph, at what rate did the second car travel?
Monday, January 19, 2015 at 11:48am

grade 7 math
Uniform Motion Related Problem Chester drove his car at 8:00 a.m. at speed of 45 km/hr. At 9:15a.m. Michael followed with his car. What should be Michael's speed so as to be able to overtake Chester at 1:00 p.m.? How far has Chester travelled when Michael overtook him?
Monday, January 19, 2015 at 11:46am

grade 7 math
Uniform motion Related Problem Five boy scouts biked to Caliraya lake at 5 km/h. their scout master gave them a ride back home in his pickup car, at 20 kph. Find the hiking time if it 6 hors longer than their riding time.
Monday, January 19, 2015 at 11:38am

7th grade math
-2(3r+4)= -5r-8-r Answer I got r=r Question 2 14+8w=4(8+2w) I have 14=48. No solution
Monday, January 19, 2015 at 10:30am

chemistry grade 11
which of the following has lowest vapour pressure ? 1 water 2 bromine 3 ethyl alcohol 4 ether
Monday, January 19, 2015 at 7:15am

Maths lit Business studies Economics History
im in grade 10 and i want to know what jobs can i do with these subjects
Sunday, January 18, 2015 at 9:57am

math(5th grade)
sixteen teams compete in a single elimination basketball tournament (one loss and you're out). How many games must be played to determine a champion?
Friday, January 16, 2015 at 12:56am

5th grade science
How might the history of the United states be different if the first European settlements had occurred on the west coast instead of the east coast
Thursday, January 15, 2015 at 9:19pm

6TH GRADE MATH
Write an equation you can use to find the length of the rectangle. area=72 m^2. 8m=length xm=width My equation is 8x=72 Am I correct?
Thursday, January 15, 2015 at 9:10pm

math(5th grade)
Garrett reads 2.8 pages in 3.5 minutes how much does Garrett read in 31.5 minutes
Thursday, January 15, 2015 at 12:49am

Math 7th grade
1/15 =3/5m For my answer, I put m= 1/5 Is that correct?
Wednesday, January 14, 2015 at 5:17pm

5th grade math
Julian wants to put a border around two sides of his rectangular shaped garden. he has a 12 foot piece of lumber that will be cut into 1/3 foot pieces. how many 1/3 foot pieces can Julian cut from the lumber? 12 divided by 1/3
Tuesday, January 13, 2015 at 8:02pm

7th grade math honors
The total cost for renting a kayak is represented as 25+5.50m. What is the constant in the expression 25+5.50m? Show work.
Monday, January 12, 2015 at 5:47pm

8th Grade Geometry
given that triangle ABC~ triangle XYZ, angle a=50, angle x=(2x+5y), angle z= (5x+y), and that angle b =(102-x), find angle z.
Sunday, January 11, 2015 at 1:33pm

Chemistry grade 11
An organic compound is composed of C, H and O. A 0.1005 g sample of this is combusted, producing 0.2829 g CO2 and 0.1159 g of H2O. What is the empirical formula of this compound? If the compound has a molar mass of 14 g/mol. What is the molecular formula?
Saturday, January 10, 2015 at 6:58pm

math(5th grade)
if an elephant's heart beats 25 time a minute, how many days does it take to beat a million times?
Friday, January 9, 2015 at 12:38am

algebra
Is there a site or someone who can help me, im not getting the basic algebra...I need someone or a web site that will help me understand the basics of algebra. PLZ HELP Im in 8th grade
Thursday, January 8, 2015 at 6:44pm

sixth grade math
Write a real-world situation that could be modeled by the equation 24/y=3. Then solve the problem. My answer: There are 24 seats available at the movies. There were total of 3 rows after the seats were divided and more seats on each row. Did I solve this problem correctly?
Wednesday, January 7, 2015 at 9:40pm

8th grade math
iPhone is designing a smart phone with a square screen. The area of the screen will be 169 cm with an exponent of 2. What is the height of the screen? I think the answer is 13. Am I correct.
Wednesday, January 7, 2015 at 6:41pm

7th grade challenge math
of 109.6 million house holds, 19,508,800 watched the television show CIS during the week of October 3, 2005. what percent of american households watched CIS this week?
Tuesday, January 6, 2015 at 7:36pm

Math
Capacity Homework? I was doing my grade 8 math homework on capacity, and I was told to order the capacity of Vase A, B, and C from least to greatest. Vase C is a hourglass based prism, and I don't know the formula for it. Please help?
Monday, January 5, 2015 at 4:49pm

Physics
1) On the construction site an electric crane is used to lift materials to the 10th floor. A 180 kW motor requires 2.0 minutes to lift a 10500 kg load if bricks 218 m. How efficient is the crane? 2. Burning 1.0 kg of coal releases 33 MJ of energy. This energy is converted into...
Wednesday, December 31, 2014 at 4:08pm

5th grade Math
Please help, what operation should I use to solve this problem? Jessica bought 10.50 pounds of potatoes. The potatoes are sold in sacks of 20 if the potatoes cost $1.99 per pound. How much money did Jessica spend?
Wednesday, December 31, 2014 at 7:51am

english (3rd grade)
Please help me to pick out 6 lines from the poem Invictus of William Ernest Henley that used sensory images and identify the sense used for each line.I also need to pick out one line that used onomatopoeia.
Sunday, December 28, 2014 at 11:59am

english (3rd grade)
State whether the infinitive in each sentence function as a noun, adjective or adverb. 1.The retirees want to spend summer far from the city. 2.Tricia plans to take a trip to Baler. 3.To see the underground river is Marissa's wish. 4.Lara prefers to visit her mother in ...
Sunday, December 28, 2014 at 7:32am

6th grade math
S 4 cups of cereal. The box states that one serving of cereal is equal ti 4/5 cup. How many servings did Sandra eat? Please explain and show work!
Friday, December 26, 2014 at 1:22pm

6th grade Math
What two expressions could be used to represent the cost of a speeding ticket on (1) streets and highways and (2) in construction and school zones?
Monday, December 22, 2014 at 4:31pm

Grade 9th
If 6.5g of zinc reacts with 5.0g of HCL,according to the reaction.Zn + 2HCL:zncl2+h2 Which substance is the limiting reaction? How many grams of the reactant remains unreactant? How many grams of hydrogen would be produce?
Monday, December 22, 2014 at 3:12pm

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