Thursday

May 28, 2015

May 28, 2015

Total # Posts: 695

**Math**

Class of 20 students, 13 play soccer, 8 play tennis and 2 play neither. Find how many students a) Play soccer or tennis b) Play both soccer and tennis c) Play only soccer
*May 27, 2015*

**Chemistry**

What is the concentration of acid or base remaining after reaction if 21 ml of 0.54 M sulfuric acid is mixed with 39 milliliters of 0.12 M sodium hydroxide?
*May 19, 2015*

**chemistry**

which one is at room temperature then ?
*March 19, 2015*

**chemistry**

LiF, BeF2, PCl3, CCl4, F2 1. which is likely to conduct electricity when aqueous: 2. which is most likely to be a gas in room temp. 3. which is likely to be very soluble in water 4. which is a polar molecule? may have more than one answer
*March 19, 2015*

**Calculus**

Nevermind, solved it!
*March 17, 2015*

**Calculus**

1.) Consider the graphs x+5y=17 and x+7=y^2 where a=7 b=2 c=57 f(x) = ? g(x) = ? I have solved for a,b, and c but I can't figure out f(x) and g(x) For f(x) I thought it was (17-x)/5 but it's not the correct answer. For g(x) I thought it was the sqrt(x+7) but it's ...
*March 17, 2015*

**Sociology**

Outline the main aspects of each of the structural functionalist (SF), conflict(C), symbolic interactionist (SI) and feminist (F) approach as explanations of the social world. So far I have for SF I have that it looks at the society as an organism that has certain things that ...
*March 16, 2015*

**Genetics**

the st+ would be wild type?
*February 24, 2015*

**Genetics**

What are the parent genotype of virgin brown eyed female and scarlet eye male? They are both recessive traits and the genes are on different autosomes. Would the parent female genotype be... bw/bw,st+/st+ ? and the male genotype be... bw+/bw+,st/st ?
*February 24, 2015*

**Biology - Genetics**

Would the parent female genotype be... bw/bw,st+/st+ ? and the male genotype be... bw+/bw+,st/st ?
*February 23, 2015*

**Biology - Genetics **

What is the expected genotypes and phenotypes of F1 flies in the cross between virgin brown eyed female with scarlet males (genes for brown and scarlet eyes are on different autosomes)? I know that brown eyes and scarlet eyes are both recessive but I'm not sure what he ...
*February 23, 2015*

**English**

Which use of semicolons would be correct? #1 In Asia as well, Chinese noble women led armies, often with great decisiveness and skill; paid tribute to the Emperor; and controlled agriculture within their areas of command. #2 In Asia as well, Chinese noblewomen led armies, ...
*February 20, 2015*

**physics **

The magnetic field of the Earth is 0.60 x 10-4 T in a certain location. a) What will be in Newtons the force on a completely ionized carbon atom (Z = 6, A = 12) traveling with the solar wind with a velocity of 10.50 x 103 m/s perpendicular to the magnetic field? b) How fast ...
*February 19, 2015*

**english**

okay.. this is the thesis statement I have come up with. I this better? The differences between farm life and city life are striking and deserve thorough examination.
*February 13, 2015*

**english**

I am looking at the above site now. I said family values because I talk about family relationships, family size, and family time and the differences between families in the city and on the farm.
*February 13, 2015*

**english**

I am writing an essay on living on a farm vs living in the city my thesis statement needs help any suggestions? The factors that a person should consider before choosing between the two are environments, lifestyle, and family values.
*February 13, 2015*

**english**

Bernard wanted to break this habit after all, why couldn't a chair be used as a chair? I know this example is a run-on sentence but I want to know if I can fix it by putting a period after habit and capitalizing after?
*February 10, 2015*

**physics**

Two 1.30-V batteries-with their positive terminals in the same direction-are inserted in series into the barrel of a flashlight. One battery has an internal resistance of 0.182Ω, the other an internal resistance of 0.139Ω. When the switch is closed, a current of ...
*February 6, 2015*

**Math**

BECUSE IS NOMALY EASY FOR ME WHEN I ADD
*February 6, 2015*

**english**

How can this thesis statement be written better? Rap music is the best ever.
*February 6, 2015*

**early childhood education**

I would like some examples of these theories being used in the classroom.
*February 4, 2015*

**early childhood education**

How have the theories of Erikson, Maslow, Piaget, and Vygotsky been applied to childhood classrooms?
*February 4, 2015*

**Poetry**

words are "clear" (line 7) and they can cause "domesticate a fear" (line 8)
*February 2, 2015*

**Poetry**

Can anyone tell me how rhyme scheme helps build the theme of "A Barred Owl"?
*February 2, 2015*

**math**

what are the coordinates of the shadow cast on the xy plane by a small object placed at the point (10,7,20) assuming that the sun's rays are parallel to the vector (5,3,-2)
*January 31, 2015*

**Biology**

What is the result of a cross of a heterozygous curly winged fly to a straight-winged fly? (Include both genotype and phenotype with fractions of each) Do I need to make a monohybrid cross or a dihybrid cross?
*January 21, 2015*

**MATH HELP**

thank you
*January 20, 2015*

**MATH HELP**

jade ran 6 times around her block to complete a total of 1 mile. how many times will she need to run to complete 5/6 of a mile?
*January 20, 2015*

**world history**

A list of Nelson Mandela's legacy(ies)
*January 18, 2015*

**English **

I need help with 2 questions for this poem: Hear, nature, hear; dear goddess, hear! Suspend thy purpose, if thou didst intend To make this creature fruitful! Into her womb convey sterility! Dry up in her the organs of increase; [5] And from her derogate body never spring A ...
*January 16, 2015*

**Biology**

What is the name of the protein that breaks the hydrogen bonds in the double helix causing the DNA strands to separate during DNA replication? I have a test tomorrow so please help!
*January 14, 2015*

**Biology**

If P1 - virgin grey body, long wings female cross with P2 - ebony body vestigial wings male.... how do I figure out what the genotype is? I think it is like this... EVg for female and evg for male... but I honestly have no idea...
*January 14, 2015*

**social studies**

a description on Guyana national flag
*December 7, 2014*

**Physics**

Elephants communicate via infrasound, at frequencies as low as 11 Hz that can travel up to 9 km. The intensity of these sounds can reach 106 dB, measured a distance of 4 m from the source. a) Determine the intensity level in W/m2 of the infrasound at 4 m from the source. b) ...
*December 3, 2014*

**physics**

An airplane traveling at v = 152 m/s emits a sound of frequency 1850 Hz. At what frequency does a stationary listener hear the sound as the plane approaches? Use 340 m/s for the speed of the sound and answer in Hz.
*December 3, 2014*

**English**

Which of the following is the repetition of consonants as in hip and hop? A. assonance B. consonance C. alliteration D. onomatopoeia I am putting B, Do you agree with my answer?
*November 28, 2014*

**English**

In “Summer,” the line “Bugs buzzin from cousin to cousin” illustrates which sound device? A. alliteration B. assonance C. onomatopoeia D. all of the above I believe it is D, Do you agree?
*November 28, 2014*

**English**

In the following sentence, which word is a preposition? I am going to the store. A. I B. am C. to D. the I believe the answer is C, do you agree?
*November 28, 2014*

**Math**

chris cuts half a rectangular lawn, 40m by 30m, by mowing strips of equal width around the perimeter. Jerri cuts the small rectangle left. How wide a stripe does Chris cut so they share the work equally
*November 24, 2014*

**Algebra**

Solve the inequality 1. m - 7 < 6 2. x + 4.5 more than or equal to 5.5 3.p + 12 > 9 4. Translate the following statement into an inequality: Five less than a number is at least nine. x - 5 more than or equal to 9 Show me how you did the work please?
*November 19, 2014*

**chemistry (AP)**

The heat of neutralization of HCl (aq) by NaOH is -55.9Kj/mol H2) produced. If 50ml of 1.6M NaOH at 25.15 celsius is added to 25ml of 1.79M HCl at 26.34 celsius in a plastic foam cup calorimeter, what will be solution temperature be immediately after the neutralization ...
*November 14, 2014*

**Chemistry**

How many electrons can be described by the quantum numbers n = 2, l = 1, ml = -1? a.) 2 b.) 14 c.) 6 d.) 10 e.) 0 I thought it was 6 but here's my reasoning n = 2 energy levels l = 1 (p orbital) ml = -1 (I don't think this is relevant to the question?)
*November 14, 2014*

**Science Help!**

Since the arrows are pointing to the tree, the tree is taking in the Carbon for photosynthesis, so I think yes.
*November 14, 2014*

**Calculus**

Can I ask why you are using 0.692 in the exponent?
*October 30, 2014*

**Calculus **

Suppose an E. coli culture is growing exponentially at 37 ◦C. After 20 minutes at that temperature, there are 1.28×10^7 E. coli cells. After 60 minutes, there are 2.4×10^7 cells. How long does it take for the culture to have double the amount of cells that it...
*October 30, 2014*

**math problem solving**

leslie has 17 tomato plants that she wants to plant in rows. she will put 2 plants in some rows and 1 plant in others. how many different ways can she plant the tomato plants?
*October 27, 2014*

**math**

Start from 110 feet away, a person on a bicycle rides towards a checkpoint and then passes it. The rider is travelling at a constant rate of 30 feet per second. The distance between the bicycle and he checkpoint is given by the equation d = |110 - 30t|. At what time is the ...
*October 23, 2014*

**Chemistry**

I was doing a lab and stared off with 10mL of HNO3 and the mass of copper which was 1.5120g. The question now is: With initial mass of copper wire being 1.5120g, calculate the volume of (16M) nitric acid that is required to fully react with the copper. Cu(s)+2HNO3(aq) --> ...
*October 14, 2014*

**model multiplication**

48 thanks just wanted to confirm my answer
*October 3, 2014*

**model multiplication**

jillian's garden, there are 3 rows of carrots, 2 rows of beans and 1 row of peas. there are 8 plants in each row. how many plants are there in all?
*October 3, 2014*

**math 4**

150-20%=?*6
*September 30, 2014*

**math 4**

please help
*September 30, 2014*

**math 4 **

yson talked with 150 customers on his shift yesterday. Of those, 20% resulted in a successful upsell of additional purchases. If Tyson makes a $6 commission on top of his regular salary for each successful upsell that he makes, how much commission did he make yesterday? $ 30...
*September 30, 2014*

**math 3**

275 so it woulbb be the 230 plus the 45
*September 30, 2014*

**math 3**

A customer sent in a $230 check to pay off an overdue bill but failed to pay the interest that accrued over the 45 days after the posted due date. The original balance owed was $230, and the account accrues interest at $0.42 per day. What amount of money should the customer ...
*September 30, 2014*

**2 math **

Denise spoke with a total of 80 customers on her shift at work today. Of those customers, 55% resulted in a sale, 15% said they would "come back another time", and 10% were sent to speak with the supervisor on shift. What is the total number of customer sales that ...
*September 30, 2014*

**2math **

n January, a company named ACME had 100 employees. In February they lost 15 employees, and in March the company hired 25 new employees. How many employees were working for ACME at the beginning of April? 100 105 110 115
*September 30, 2014*

**Math**

I forgot how to do inequalities with a rational function. The question I have is: ((3x-2)/(x-1))<1
*September 30, 2014*

**Math**

So she saw 461 dolphins that are 5 year so we don't need to estimate on this problem. So I did 461/5 is 92 is the answer. Then the said how many did he spot per summer in the 5 summers he worked so I think we need to divide the answer which is 92 and the 5. 92/5 18 is your...
*September 23, 2014*

**math**

You estimate 547= 540 and 92= 90.So now divide 540/90 and there you got your answer. 60 is your answer
*September 23, 2014*

**physics**

The speed of all electromagnetic waves in empty space is 3.00 × 108 m/s. What isthe wavelengthofradio waves emit- ted at 97.9 MHz? Answer in units of m
*September 18, 2014*

**Physics Grade 12**

Heather is sitting on her car at a spotlight. At the instant light turns green, she starts accelerating at 2.2 m/s/s. At the same moment a truck rumbles past her car going a constant speed of 12.2 m/s. Heather is infuriated at being passed by a truck and she keeps accelerating...
*September 17, 2014*

**Grade 12 Physics**

Bredan is driving through town at 25m/s and begins to accelerate at a constant rate of -1.0m/s/s. Eventually Brendan comes to a complete stop. A) Represent Brendan's accelerated motion by sketching a velocity-time graph. B) Use the velocity-time graph to determine his ...
*September 17, 2014*

**science**

A vehicle starts from rest and accelerates with a constant acceleration, covering 200m in 5s. it then continues at a constant velocity for 300m before decelerating with a constant 2m/s^2 deceleration to a stop. what is the maximum speed attained, total time traveled, total ...
*September 9, 2014*

**statistics**

Assign your numbers for mean μ and standard deviation σ. Then select one number "a" bellow μ and one number "b" above μ. Choose these numbers not far from μ so we can use z. Find probability that x is between a and b: P(a < x <...
*September 4, 2014*

**chemistry**

1. What is the binding energy per nucleon? Why is the binding energy per nucleon, rather than per nuclide, used to compare nuclide stability? 2. When a nucleus forms from nucleons, is energy absorbed or released? Why? 3. Many scientists reacted skeptically to Einstein's ...
*July 26, 2014*

**Chemistry Please Help!!!**

Airbags contain a mixture of sodium azide, potassium nitrate, and silicon dioxide. A sensor detects a head on collision that cause the sodium azide to be ignited and to decompose forming sodium and nitrogen gas. This gas fills a nylon or polyamide bag such that the front face ...
*July 25, 2014*

**Science**

What are the affects when posting warning signs where there is a history of wildlife collisions. Please explain using jot dots please .
*July 17, 2014*

**Science**

I need some additional help. Can you help me?
*July 17, 2014*

**Science**

You are a scientist hired by the ministry to investigate its anti-collision strategies. Choose one of the five strategies above. Outline a procedure to test how well the strategy works. I've chosen adding highway lighting to improve night visibility. But how do I start it ...
*July 17, 2014*

**Science**

Thanks so much :)
*July 17, 2014*

**Science**

Thanks, by the way why is d a better answer ?
*July 17, 2014*

**Science**

Which of the government strategies for reducing collisions listed below might be the most effective? Explain your answer. a. Installing fencing along major highways b. Draining salty ponds near highways c. Posting warning signs d. Adding highway lighting to improve night ...
*July 17, 2014*

**Math**

Find three consecutive integers that have a sum of -402. Describe your strategy.
*July 14, 2014*

**Math**

What power of 7 is 40 353 607?
*July 14, 2014*

**algebra**

A lab assistant wants to make 5 liters of 27.2% acid solution. If solutions of 30% and 16% are in stock, how many liters of each must be mixed to prepare the solution?
*July 5, 2014*

**math**

A car costs $45000. The cost of the car depreciates by 30% each year. How muck will the car be worth in five years?
*June 23, 2014*

**science**

Why can we see ourselves in a mirror but not a wall
*June 22, 2014*

**science**

How do you calculate field of view
*June 22, 2014*

**Math**

The class with the greatest mean sales in a spring fundraiser will win a prize. The mean for Eric's class is $148. The mean for Natalia's class is $152. Natalia's sales total $150. If Natalia moves to Eric's class, the mean for each class increases. Explain why?
*June 17, 2014*

**algebra**

let the numbers be x, y, z 2x=y+z+11 2x-y-z=11 2x+3z=y+1 2x-y+3z=1 y=x+z -x+y-z=0 2x-y-z=11-------------- 1 2x-y+3z =1--------------2 -x+y-z= 0-------------- 3 consider equation 1 &2 Multiply 1 by -1 Multiply 2 by 1 we get -2x+y+z =-11 2x-y+3z =1 Add the two 4z=-10...
*June 17, 2014*

**English**

aside from any grammar or spelling mistakes how is this essay! Can the perfect ideal of loyalty ever be achieved? With no guidelines how can you match a book definition of loyalty. Loyalty is essential in human life, but what is it. The dictionary will describe loyalty as ...
*June 17, 2014*

**SP180.1.2 Principles of Public Speaking**

SP180.1.2 Principles of Public Speaking i need help with my outline. not sure where to go from here. I. TITLE: Bullying in schools A. General Purpose: To persuade B. Specific Purpose: To persuade my audience that bullying in schools need to be stopped C. Central idea: The ...
*June 12, 2014*

**Math**

A circular swimming pool has a diameter of 7.4m, and a height of 2.4m. What is the volume of the pool?
*June 12, 2014*

**Math**

will it be 824.25
*June 12, 2014*

**Math**

I went on that website but I don't understand it
*June 12, 2014*

**Math**

How do you calculate the surface area of a cylinder when the diameter is 15cm and the height it 10cm
*June 12, 2014*

**Math**

b) The median of 15,17,13,19,20,33,22,18 and __ is 18.5 . Is it possible the determine the missing value?
*June 11, 2014*

**Chemistry**

thanks
*June 7, 2014*

**Chemistry**

how would you do this question when i did it i did -log(1.0) but that is just 0 so what it the procedure to do this question Calculate the pH of a 1.0 mol/L aqueous solution of sodium benzoate. Note: Only the benzoate ion affects the pH of the solution.
*June 7, 2014*

**Lone Peak High**

How much of a stock (18.5 M) HCl solution would be required to make 100mL of 0.025 M HCl?
*June 7, 2014*

**Science**

That's what I'm thinking..
*June 6, 2014*

**Science**

So 35 x 9.8 = 343 N 343 x 3.0 = 1029 J Is that the answer to A or B, I'm a bit confused
*June 6, 2014*

**Science**

a)How much work is required to lift a 35-kg object from the ground 3.0 m into the air? b) How much gravitational potential energy did this object gain?
*June 6, 2014*

**Science**

Calculate the work done in each of the following situations. a) A horse pulls a wagon with a force of 1200 N and moves it 15 m. b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N.
*June 5, 2014*

**science**

When you do work to lift an object, what form of energy does the object gain
*June 5, 2014*

**Science**

An object has a mass of 5.0 kg on the surface of the Moon. What would be the object's: a) mass on Earth b) force of gravity on Earth
*May 28, 2014*

**Health**

help**
*May 25, 2014*

**Health**

What is Marijuana ? Can you get cancer from Marijuana ? Is it good or bad for you? I need h
*May 25, 2014*

**Language **

I need help answering this question.. How did you or your family deal or cope with these issues? These are the social justice issues i came up with : Poverty, Alcohol & drinking, violence, racism, and lack of human rights.. I know it's my own opinion but I don't know ...
*May 25, 2014*