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April 23, 2014

April 23, 2014

Post a New Question | Current Questions

**10th grade**

A car crashes into a wall a 25m/s and is brought to rest in 0.1s. Calculate the average force exerted on a 75-kg test dummy by the seat belt. What is the formula to solve this problem.
*Monday, January 12, 2009 at 12:03am*

**10th grade**

if A,B,and D lie on the point of tangency C, then A,B,D, and C are the same point. It makes little sense to me.
*Sunday, January 4, 2009 at 8:43pm*

**10th grade Algebra**

Do you mean the original question should have been to factor 6(ab)^2-(q-r)^2 ? That is the difference of two squares. Follow the appropriate procedure.
*Friday, January 2, 2009 at 12:58pm*

**10th grade Algebra**

This can be factored by starting with taking 4h out. 4h(2h-1)
*Friday, January 2, 2009 at 11:53am*

**10th grade math**

3(x-2)=4-(x-2) 3x-6 = 6-x 4x = 12 x = 12/4 x = 3
*Sunday, December 28, 2008 at 3:04am*

**democratic politics 10th grade cbse**

We do not do your homework for you. After you have done the reading and have written some answers, please repost and we will be happy to make corrections or further suggestions
*Tuesday, December 23, 2008 at 11:14am*

**10th grade Math**

In logarithms, my problem is 2log(subscript 3)n + log (sub 3)5. I know how to add logarithms together, but what do I do with the 2 before the first log?
*Tuesday, December 9, 2008 at 7:41pm*

**10th grade science**

The ancestor to the magnolia is thought to be a probable prototype, but frankly, there is much incomplete evidence, and there are gaps. So "most likely" is the key. We just dont know for certain yet.
*Wednesday, November 19, 2008 at 7:53pm*

**10th grade science**

Which of the following would most likely be the prototype for a flower? an aster a magnolia a hibiscus a gladiola a rose I have no idea i know that a prototype serves as typical example but to me all the answers work
*Wednesday, November 19, 2008 at 6:28pm*

**10th grade**

How many moles of water in a 1000g? Then muliplty that number of moles by avagradro's number.
*Wednesday, November 12, 2008 at 10:21pm*

**10th grade**

How many water molecules are in a 1.oo-L bottle of water? The density of water is 1.00 g/mL
*Wednesday, November 12, 2008 at 10:16pm*

**10th grade**

Whatis the difference between the Hudson Bay Lowlands and the Arctic Lowlands?
*Wednesday, November 12, 2008 at 2:47pm*

**general**

Some states have high school starting at 9th grade while some start only in 10th. so when are the kids ready for AP classes? is this school dependent?
*Thursday, November 6, 2008 at 2:18pm*

**10th grade honors algebra**

You need to group the like terms together. So 3x/2-x+3 which is x/2+3 [because 3x/2-x=(3x-2x)/2] if you want it over the same demoninator then (x+6)/2
*Thursday, November 6, 2008 at 3:45am*

**10th grade**

Yes, but they usually just call them bays, or use a French or Arabic or African word. There is a Seaforth Sound in South Africa.
*Friday, October 24, 2008 at 1:54am*

**10th grade math**

i need help with math
*Wednesday, October 22, 2008 at 6:56pm*

**Math**

The subject is math, not 10th grade. 575=.05(X)+ .06(10,000-x) solve for x
*Tuesday, October 21, 2008 at 7:05pm*

**10th grade**

Carlos invested $10,000. part ot 5% and the rest at 6%. His total annual income from these investments was $575. How nuch did he invest at each rate?
*Tuesday, October 21, 2008 at 7:03pm*

**10th grade math**

the area of a parallelogram is 85 square meters and its base is 17 meters long. what is the height of the parallelogram?
*Monday, October 20, 2008 at 9:47pm*

**10th grade,english**

if your reading a book and the narrator doesnt have a name what would that mean...y wouldnt they have a name?
*Thursday, October 16, 2008 at 11:55pm*

**10th grade,english**

Please be careful, Lily, of insulting people on this forum_search_20140419. This is a Homework HELP forum_search_20140419. The word "help" means to assist, not do. This is not a Homework DO forum_search_20140419.
*Sunday, October 5, 2008 at 4:59pm*

**10th grade**

A dictatorship is not part of the democratic system...Dictatorship is ruled by one person, a dictator, the people of his country have no political voice.
*Wednesday, September 24, 2008 at 12:19am*

**anwser to 7 grade math**

hey wats up my name is taz manian in in the 10th grade and im going to anwser your question. negative five-sevenths times two-fifths... you multiply -5/7(2/5) you can use a calculator to anwser this problem just type it in but make sure you type it in the right way. so the ...
*Monday, September 22, 2008 at 10:57pm*

**Math**

see above 10th grade math.
*Sunday, September 21, 2008 at 3:50pm*

**10th Grade Math**

Why is is important to understand addition? The same reasoning applies, exponents (rational, real, irrational, or imaginary) are basic operations in mathematics. If you want to be somebody, using math logic, you need to be expert in them.
*Sunday, September 21, 2008 at 3:49pm*

**10th grade**

first one. Notice the kilo in the denominator,divide that out.. kN/s^2 second on, notic the milli, multiply that out (by 1000) MN/s
*Wednesday, September 3, 2008 at 8:37pm*

**10th grade**

How do I represent the following to 3 significany figures and express the answer in SI units using an appropriate prefix? or Can you give me an example? 45 320 kN
*Wednesday, September 3, 2008 at 7:54pm*

**10th grade**

Engineering Foundations 2 Calculations converstions How do I put this combination in the correct SI form? MN/ks2 kN/ms
*Wednesday, September 3, 2008 at 7:45pm*

**10th grade**

wats a abstract noun for these: 1.quaterback 2.scream 3.perfume 4.pepper 5.bruise 6.dog 7.binoculars 8.teeth 9.lamb 10.book
*Wednesday, August 27, 2008 at 5:55pm*

**10th grade**

in this geometry sequence, i have a 90 degree angle, 135 degree,157.5 degree & i need to know the next angle. please help!
*Tuesday, August 26, 2008 at 8:31pm*

**10th grade**

Find the value of the variable and ST if S if between R and T. RS = 7a, ST = 3x, RT = 25 SHOW WORK =P
*Tuesday, August 26, 2008 at 7:28pm*

**10th grade math**

Three significant digits? That means the hundredths digit is to be rounded. Does the 8 in the next digit make the 4 go to 5?
*Tuesday, August 19, 2008 at 8:58pm*

**10th grade math**

1.548937075 x 10 to the 12th. round the number to 3 significat figures. I thought I would respost this because the other one was getting confusing
*Tuesday, August 19, 2008 at 8:56pm*

**10th grade math**

If you didn't do the power of 10 and just kept the number 1.548937075 wouldn't it be rounded to 1.55 if it was round to 3 significant numbers?
*Tuesday, August 19, 2008 at 8:48pm*

**10th grade math**

How would you figure out 1.45386759 x 10 to the 12 and round to the significant figure? thanks
*Tuesday, August 19, 2008 at 8:16pm*

**10th math**

The sum of the 4th and 8th terms of an AP is 24 and the sum of the 6th and 10th terms is 44. Find the first three terms of AP
*Wednesday, July 30, 2008 at 9:30pm*

**Math**

I am tring to finish my 10th grade. I got hurt last Jan. 2007. And was force to quit public school. In short of every. I started online schooling and I have to write an essay for a final grade in Math compare three college to each other and make a graph telling which school ...
*Thursday, September 13, 2007 at 9:54am*

**math **

In new Your a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10th mile. How much does it cost to drive 6 miles? Set up and solve? I do not understand how you got this answer...can you explain? .72+ .15(6-.1).1 = $9.57 When I work the ...
*Thursday, February 27, 2014 at 5:08pm*

**math**

Yes, you are right. Use distribution and multiply each number in the parenthesis aka the "10x" and "-12" by -3. So it would be 10x(times -3) - 12(times -3) -30x - -36 -30x + 36 Thats your answer. Hope this helps! Serena, a 10th grade student
*Tuesday, December 17, 2013 at 6:02pm*

**physics**

a woman weighs Fg=650 when standing on a stationary scale. The woman is riding an elevator from the 1st floor to the 10th floor. As the elevator approaches the 10th floor, it decreases its upward speed from 9 m/s to 1 m/s in a time interval of 1 second. What is the average ...
*Saturday, November 2, 2013 at 1:21pm*

**Physics**

WOMAN IN ELEVATOR A woman weighs Fg= 650 N when standing on a stationary scale. Now, the woman is riding an elevator from the 1st floor to the 10th floor. As the elevator approaches the 10th floor, it decreases its upward speed from 8 m/s to 1 m/s in a time interval of 1 s. ...
*Saturday, November 2, 2013 at 12:42pm*

**Physics **

A woman weighs Fg= 600 N when standing on a stationary scale. Now, the woman is riding an elevator from the 1st floor to the 10th floor. As the elevator approaches the 10th floor, it decreases its upward speed from 7 m/s to 1 m/s in a time interval of 1 s. What is the average ...
*Saturday, November 2, 2013 at 12:09am*

**Survey Math **

A survey of 240 10th grade students in a local High School found that there were 140 girls and 100 boys in the grade. Of the 140 girls, 100 preferred gym class while 40 preferred art class. Of the 100 boys, 40 preferred gym class while 60 preferred art class. Construct a data ...
*Saturday, October 12, 2013 at 11:20am*

**Stats/math**

The deciles of any distribution are the 10th, 20th,...90th percentiles. The first and last deciles are the 10th and 90th percentiles, respectively. What are the first and last deciles of the standard Normal distribution? HOw would i solve this? thank you sooo much!
*Saturday, September 14, 2013 at 10:46pm*

**English**

Yeah i also do connections. 10th grade. In September of 2012 i went to the beach for a week. it is now almost christmas and i still am trying to get caught up. weve been on break foralmost a week. this is so stressful. People think its easy because were home. NOOOOOOOOOOOOO...
*Monday, December 24, 2012 at 4:50pm*

**Math - 10th grade**

your expansion is correct, except now you have to reduce the powers of i look at this pattern i^1 = i i^2 = -1 i^3 = (i^2)i = -i i^4 = (i^2)(i^2) = (-1)(-1) = 1 i^5 = (i^4)(i) = i so it runs: i , -1 , -i , +1 , i , -1 , -i , +1 , ..... notice that if the exponent is divisble ...
*Saturday, October 27, 2012 at 2:47pm*

**10th Grade Literary Essay**

What does F. Scott Fitzgerald suggest about the state of the American Dream, the people who pursue it, and the impact of that pursuit through his depiction of Jay Gatsby and the people in Gatsby’s life? Include specific examples, quotations, and supporting details from ...
*Friday, September 28, 2012 at 1:17pm*

**10th grade chemistry**

When everything is in the gaseous state, one may use a short cut; i.e., it isn't necessary to convert to mols of what you have, then to mols of what you want, and back to moles of what you want. Go directly from L of what you have to L of what you want. 25.0L H2 gas x (2 ...
*Tuesday, May 29, 2012 at 6:36pm*

**c++**

Write a program that asks the user to input a grade that he or she received on an exam. The grade is an integer from 0 to 100 inclusive. The program should convert the numeric grade into the equivalent letter grade. Do the conversion by using a function Letter_Grade () that ...
*Friday, May 18, 2012 at 10:53am*

**Maths 10th grade**

1-The roots of x2 - 6x + m - 3=0 are x1 and x2.If 2x1 - 3x2= 2 is given, find m? 2-Given the inequalities x-2 ______ < 0 and x2 - 4x - 5<0 , find the solution set. x-4
*Sunday, March 4, 2012 at 3:06pm*

**Math Lit **

In a school there are 122 grade 8s, 105 grade 9s, 134 grade 10s, 109 grade 11s, 90 grade 12s. Express Each Class as a percentage of the whole school.
*Sunday, February 5, 2012 at 2:42pm*

**10th Grade Pre-Calc**

Don't you mean P = 5000[1 - 4/(4 + e^-.002x)] ? If P = 600 , 0.120 = [1 - 4/(4 + e^-.002x)] 4/(4 + e^-.002x)] = 0.88 4 + e^-.002x = 4.5454 e^-.002x = 0.5454 -0.002x = ln(0.5454) = -0.6061 x = 303
*Tuesday, January 17, 2012 at 5:50am*

**10th grade math**

a rectangular picture 8 inches by 12 inches has a frame of uniform width x inches. Write a function expressing the total area A of the picture and the frame as a function of x.
*Saturday, October 29, 2011 at 4:01pm*

**5th grade math**

f I have 3 geese in the first pattern, 5 in the 2nd pattern, & 7 in the 5th pattern, how many geese will be in the 10th and 100th patterns?
*Wednesday, October 12, 2011 at 10:08pm*

**Math/History(Short Question 10th grade))**

My! You've just posted 10 of your math and HISTORY question. Are you, by any chance, trying to cheat?? To get you started: Two pieces of technology essential today: electricity and the wheel
*Thursday, September 15, 2011 at 11:20pm*

**10th Grade Honors Chemistry**

This question is quite simple if you really think about it. well lets see what the problem is asking you to do. I did the work and the answer always seems to come as 15.2g So the answer is definitely 15.2g
*Wednesday, May 18, 2011 at 6:20pm*

**10th Grade Math**

1. new price x cents solve 10x = 12(15) 2. number of chickens --- x number of pigs --- 41-x solve : 2x + 4(41-x) = 100 3. number of people --- x (5/6)x - 3 (3/4)x 4. let the number of year since Troy was born be x Mrs. Grant = 20+6+x Tess = 6+x Carly = 4+x Troy = x solve : 26+...
*Monday, May 2, 2011 at 8:07am*

**10th Grade Algebra**

Please help me with these factorise algebra questions!!! 1. 9c squared + 30c + 25 - 4d squared 2. 12 + 89 - 4a squared 3. -5x squared + 27x - 10 4. If A= 15x squared - 20x +11 and B= 1 + 9x+ 5x squared, then A-B when factorised is...
*Sunday, May 1, 2011 at 9:15am*

**10th grade**

well first you find how many coins there are in all. In this problem the entire amount is 6 coins, 3 of the 6 coins are dimes, if you pull out one dime there are now 2 dimes out of 5 coins ( because you took one away) so the answer would be two out of five chances.
*Sunday, April 3, 2011 at 7:11pm*

**5th math **

what is the least common multiple (LCM)for 15 and 45? There are 16 girls in a class of 36 student. which expression could be used to determine the number of boys (b) in the class? please! help i think this too hard for 5th grade math. this suppose to be for 10th or college ...
*Monday, January 31, 2011 at 9:33pm*

**10th grade**

The change in speed is 9.26 ft/s. Time spent accelerating = 9.26/1.2 = 7.72 seconds The average speed on the steep part was 5.88 ft/s Distance = 7.72 s * 5.88 ft/s= 45.4 feet
*Thursday, December 9, 2010 at 10:58am*

**10th grade**

Eq1: 2x - y = -5 Eq2: -2x - 5y = 11 Add the 2 Eqs and get: -6y = 6, Divide both sides by -6: y = 6 / -6 = -1. Substitute -1 for y in Eq1: 2x - (-1) = -5, 2x + 1 = -5, 2x = -5 -1, 2x = -6, Divide both sides by 2: x = -6 / 2 = -3. Solution set: (-3 , -1).
*Thursday, December 9, 2010 at 2:05am*

**10th grade**

What have you said in the body of the paper? You can't write the introduction until you've written the body of the paper. If you post it here, we'll be glad to help you with the introduction.
*Monday, December 6, 2010 at 6:00pm*

**10th grade**

mass: 2.04 molar mass of MgSO4: 24.3+32.1+16*4=120.4 moles= 2.04/120.4 = 0.0169mol
*Sunday, December 5, 2010 at 9:43am*

**10th grade**

and the question is what is M? 3x+13=6x-2 15=9x x=15/9 m=3*15/9 + 13= 5+13=18 You really ought to post questions, I somewhat leaves tutors in the dark about what you need.
*Saturday, November 13, 2010 at 8:29am*

**10th grade**

http://acronyms.thefreedictionary.com/HC2H3O2
*Friday, November 5, 2010 at 5:46pm*

**10th grade**

If you have a graphing calculator just plug in y= (-4/3)x+(4/3) 4x+3y=4 -4x -4x 3y = -4x+ /3 /3 y = (-4/3)x+(4/3) I used (parenthesis) to show fractions.
*Wednesday, November 3, 2010 at 9:59pm*

**10th grade**

Are they corresponding angles? If so, 2x-3=x+39. Are they supplementary angles? If so, 2x-3+x+39=180. Are they complementary angles? If so, 2x-3+x+39=90.
*Sunday, October 31, 2010 at 9:10pm*

**10th grade**

Line m is parallel to line n. The measure of angle 3 is (2x− 3)°. The measure of angle 6 is (x + 39)°. What is the measure of angle 3?
*Sunday, October 31, 2010 at 8:59pm*

**10th grade**

a tree casts a shadow that is 20 feet long. the angle of elevation from the end of the shadow to the top of the tree is 66 degrees. Determine the height of the tree to the nearest foot.
*Sunday, October 17, 2010 at 2:56pm*

**Marine biology? needs help**

10th grade is NOT the School Subject. If you don't select the right School Subject, the right volunteer teacher will not read your post. Sra
*Tuesday, October 5, 2010 at 8:52pm*

**10th grade**

Check this site: http://en.wikipedia.org/wiki/Gravitation
*Tuesday, October 5, 2010 at 3:47pm*

**10th grade**

A soccer player kicka a ball with an initial velocity of 10 meters per second at an angle of 30 degress above the horizontal. the magnitude of the horizontal component of the ball's initial velocity is
*Sunday, October 3, 2010 at 6:25pm*

**10th grade**

.12(5)=.10(x)+.17(5-x) where x is the amount of 10% solution and 5-x is the rest amount of the 5L of 17% solution
*Friday, October 1, 2010 at 6:43pm*

**10th grade**

I am sure this one has been answered recently. calculate the molecular mass for methane (CH4) = 16 the percentage of C in 10 g of methane wil be the same as the percentage of C in the molecular mass so 12x100%/16
*Monday, September 27, 2010 at 10:42am*

**10th grade**

The area (A) of any triangle is half the product of its base (b) and the height (h). If the base of a triangle is 16mm and it's height is 3mm, what is the area?
*Thursday, September 23, 2010 at 7:26pm*

**10th grade**

I'd make sure it was used with the word "with" in front of it, and that the two words together act as an adverb. http://www.answers.com/civility
*Tuesday, September 21, 2010 at 5:41pm*

**10th grade**

At a preview of a movie,6 people out of 500 walk out. suppose that 600,000 people see the movie. estimate the number of people who walk out
*Sunday, September 19, 2010 at 7:49pm*

**10th grade**

1£©sketch six points a b c d e and f, no three of which are collinear. name the lines defined by these points. how many lines are there¡£¡£ 2£©describe a way to find points that divide a segment into fourths¡£ 3£&...
*Friday, September 17, 2010 at 10:40pm*

**10th grade**

1 * 2 = 2 2 * 3 = 6 6 * 4 = 24 24 * 5 = 120 120 * ? = ?
*Wednesday, September 15, 2010 at 7:42pm*

**10th grade**

mary has a bag which contains 5 green marbles, 7 red marbles, and 9 blue marbles. without looking what is the probability of her pulling a red or a green marble
*Wednesday, September 15, 2010 at 12:10pm*

**algebra**

In 1992, the life expectancy of males in a certain country was 61.6 years. In 1995, it was 65.2 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The linear function E(t) that fits the data is... E(t)=_____t + _______ (...
*Sunday, September 12, 2010 at 6:12pm*

**10th grade**

A computer manufacturer assembled 21,000 computers in October. For the month of November, they expect to double production. If a worker can assemble one computer per day, how many workers will be needed to complete the job in 28 days? a. 1,500 workers b. 750 workers c. 1,429 ...
*Thursday, September 9, 2010 at 5:18pm*

**10th grade**

x^2+4x-60=0 You have to look for two numbers that multiply to the last term (-60) and add to the middle term (4). In this case, the numbers are 10 and -6. We write them like this: (x+10)(x-6) Check my work.
*Tuesday, September 7, 2010 at 9:54pm*

**10th grade math**

-5y(6y - 6) - y = -4(y - 5) -30y^2 + 30y - y = -4y + 20 30y^2 - 33y + 20 = 0 y = (22 ± √-1311)/60 or (22 ± i √1311)/60 , two complex roots.
*Friday, September 3, 2010 at 9:25pm*

**Algebra**

In 1992, the life expectancy of males in a certain country was 68.3 years. In 1998, it was 71.1 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is... E(t)=_____t + _______ (...
*Friday, September 3, 2010 at 3:26am*

**10th grade Honors English**

What kind of HELP do you need? You need to be specific when asking questions here. If all you do is post your entire assignment, nothing will happen since no one here will do your work for you. But if you are specific about what you don't understand about the assignment ...
*Wednesday, September 1, 2010 at 7:10pm*

**10th grade**

Given: 3x-2-x=7-x Add x to each side to get 3x-2=7 Add 2 to each side to get 3x=9 Solve for x.
*Saturday, August 28, 2010 at 10:22pm*

**10th grade**

3x-2-x=7-x 3x - x + x = 7 + 2 3x = 9 x = ?
*Saturday, August 28, 2010 at 10:21pm*

**10th grade**

I have to write an insightful handwritten reflective response via essay about a passage in a novel. The passage is about 3 sentences. It is a summer reading book. How many pargraphs do i need and help with layout of essay.
*Tuesday, August 24, 2010 at 2:18pm*

**10th grade Math**

1.)Explain why ironing boards always remain parallel to the floor and can be adjusted for people of various heights. You may want to consider the following: a.The legs of the board are built so that AD = BD and DE = DF, and ADF and BDE are straight lines as shown. b.Which ...
*Wednesday, July 21, 2010 at 2:48pm*

**10th grade English**

http://dictionary.reference.com/
*Thursday, July 15, 2010 at 11:33am*

**Math**

In 1990 the life expectancy of males in a certain country was 70.9 years. In 1994, it was 73.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The liner function E(t) that fits the data is E(t)= _t+_ . Round to the ...
*Sunday, July 4, 2010 at 11:13am*

**10th grade Math**

A radio station's signal has a radius of 100 miles. If you drive at a constant speed of 40 miles an hour, nonstop, directly across the diameter of the signal, how long can you listen to the station before the signal fades?
*Saturday, June 26, 2010 at 7:39pm*

**Geometry 10th grade**

Which of the following represents the intersection of two planes? A) a line B) a point C) a point or a line D) two points
*Tuesday, June 8, 2010 at 11:37am*

**Geometry 10th grade**

If my outcome is correct the perimeter should be 20. I did this by drawing to seperate triangle and labeling each one KLM and JHG. With the information you gave it said that KLM ad JHG are congruent. Then I drew the big triangle and combined them. all together the triangle ...
*Monday, June 7, 2010 at 11:17pm*

**Geometry 10th grade**

Find the perimeter or given triangle. KLM if JHG~KLM, KM=6, HJ=3, JG= 4, and GH=6. The biggest triangle is FHL. KLM is part of right corner of the big triangle and JHG is the left corner of the big triangle.
*Monday, June 7, 2010 at 9:38pm*

**10th grade Academic Math**

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.
*Monday, June 7, 2010 at 7:29pm*

**10th grade Academic Math**

Let S=usual speed, Then S-8=experimental speed. Taking the difference between the "experimental time" and "usual time", we get: 140/S - 140/(S-8) = 2 Solve for S.
*Monday, June 7, 2010 at 7:22pm*

**10th grade Academic Math**

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.
*Monday, June 7, 2010 at 7:19pm*

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