Friday
December 19, 2014

Posts by jane


Total # Posts: 1,402

physics
Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 52.7 N to the north. Jenny’s foot exerts a force of 91.8 N to the east. a) What is the magnitude of the resultant force on the ball? b) What is the direction of the resultant ...
October 7, 2012

Biology
Some genes are said to be “linked”. Explain this term and the implications it has as to the inheritance of certain traits. Provide 2 (human) examples of linked genes? PLEASE HELP ITS A REQUEST
September 26, 2012

grade12 bio
Some genes are said to be “linked”. Explain this term and the implications it has as to the inheritance of certain traits. Provide 2 (human) examples of linked genes?
September 26, 2012

physics
Maria throws an apple vertically upward from a height of 1.3 m with an initial velocity of +2.6 m/s. Will the apple reach a friend in a tree house 2.4 m above the ground? The acceleration 1. No, the apple will reach 1.37063 m below the tree house 2. Yes, the apple will reach 1...
September 25, 2012

Algebra
Natalie has some nickles, Dirk has some dimes, and Quincy has some quarters. Dirk has five more dimes than Quincy has quarters. If Natalie gives Dirk a nickel, Dirk gives Quincy a dime, and Quincy gives Natalie a quarter, they will all have the same amount of money. How many ...
September 24, 2012

Doe
A car traveling at 6.7 m/s accelerates 2.1m/s2 to reach a speed of 12.0 m/s. How long does it take for this acceleration to occur? Answer in units of s
September 24, 2012

physics
a 60 kg object is attached to one end of a 40 kg steel tube 2.4 m long. what is the distance from the loaded end to the balance?
September 23, 2012

math
1.P(10,1)*p(10,2)*p(10.3) 2.C(12,9) 3.C(15,3) 4.5!
September 19, 2012

math
Determine , apermutation or combination 1.The winner and second and third placed in contest woth 10 finalists . 2.Selecting nine books to check out of the library from a reading list of twelve . 3.Selecting three of fifteen flavours of ice cream . 4.An arrangement of letters ...
September 19, 2012

math
Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher ...
September 18, 2012

math
Decide if it's permuatation or combination . 1-how many teams of 4 horses be made if there were 9 horses in total ? 2-mike has nice baseball trophies to arrange on the shelf . How many different ways can be arranged ? 3-in a math class , there are 24 students,the teacher ...
September 18, 2012

chemitry
what does it mean by how many moles of the limiting reactants in sodium bia
September 16, 2012

earth
waste produced by people along the east coast of the united states has been dumped into the atlantic ocean where it is distriuted y surface ocean currents, Which coastel area is most liekly to become polluted by this waste?
September 14, 2012

geometry
Steve, thank you so much. You explained it so I could understand it.
September 14, 2012

geometry
Algebra BD bisects <ABC. Solve for x and find m<ABC. m<ABD = 4x - 16, m<CBD = 2x + 6 Please teach me how to work this.
September 14, 2012

Geometry
Solve for x. Find the angle measures to check your work. m<AOB = 4x - 2 m<BOC = 5x + 10 m<COD = 2x + 14 How do I solve for x?
September 13, 2012

Geometry
Please explain how to work this problem: A pair of earrings has blue wedges that are all the same size. One earring has a 25 degree yellow wedge. The other has a 14 degree yellow wedge. Find the angle measure of a blue wedge. How do the angle measures of the earrrings relate? ...
September 13, 2012

business
What is most important about section 179 depreciation?
September 11, 2012

calculus
If f(x)= 1 + ln(x+2), then f^-1 (x)is...?
September 11, 2012

Physics
A particle moves in a straight line so that its position (x cm) from a fixed point O at time (t seconds) is given by x= t^3-6t^2-15t-5 Find the average speed of the particle in the first 7 seconds
September 8, 2012

calc
got it, thanks!
September 4, 2012

calc
Suppose that f(x) = 1/x. Find a simplified expression for f(x)-f(a)/x-a
September 4, 2012

precalc review/calc
Thanks! So because the smallest and biggest numbers +/- 3 and the middle number 0 result in the smallest and largest y values, 1 and 8 respectively, the range is therefore [1, 8]. That makes sense. :D
September 3, 2012

precalc review/calc
For the curve y=2^[sqrt(9-x2)], find the range of the function. I think the range is [0,8] but I don't know why. Could you show me how to get to that answer? Thanks.
September 3, 2012

Chemistry
A piece of metal weighing 20.32 grams is added to a flask with a volume of 24.5 cm3. It is found that 18.52 grams of water must be added to the metal to fill the flask. What is the density of the metal?
September 3, 2012

process control
Average power (btu/s) needed for a process that heats water at 40 lbm/min from 20F to 150F. Can you just tell me generally how to solve a problem like this. The numbers do not really matter, I just need to practice problems. Thanks.
August 26, 2012

Communication
Any. :) I need a theory that supports how and why Twitter is being used as a prime source for real time news. I thought of comparing it with the newspaper and facebook.
August 26, 2012

Communication
Hello! I need help with my research regarding-- Twitter being used as a prime source for real time news. Can anyone suggest a communication theory I can use for this study? I was thinking about using the agenda-setting theory, but I need another theory aside from that. :)
August 26, 2012

Physics
A fire hose can project water at a rate of 6.00x10^2 litres per minute to a height of 40.0m. Find: a) the velocity with which the water leaves the tube b) the kinetic energy of the water as it leaves the hose c) the kinetic energy of the water at 40.0m.
August 26, 2012

geometry
In Geometry how do I calculate the precion of 14 meters?
August 21, 2012

algebra1
tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even integer.what are the integers?
August 20, 2012

calculus
suppose you invest some money in an account at 6% compounded monthly, after four years you have $8000, how much interest did you earn
July 20, 2012

geometry
A woman who is 6-ft tall casts a 4.5-foot shadow at the same time that a building casts a 75-foot shadow. What is the height of the building in feet?
July 19, 2012

math
Issa IS driving to the airport to catch a flight to Miami, and Her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and arrive at the airport on time. The equation ...
July 18, 2012

marketing
Using the broad definition of a product, identify and explain what products are being offered by a shop that specializes in bicycles; by a travel agent; by a supermarket; and, by a new car dealer
July 15, 2012

marketing
How might you use different types of research (focus groups, observation, survey, and experiment) to forecast market reaction to a new kind of disposable baby diaper?
July 15, 2012

Math
Issa is driving to the airport to catch a flight to Miami, and her arrival depends on traffic. If the traffic is light, then she can drive 60 mph and arrive at the airport 1 hour early. If traffic is heavy, she can drive 35 mph and arrive at the airport on time. The equation ...
July 10, 2012

Science
science is the mixture ilearneed the science on the time she give my on fast day me is go for the killer and gave my juck on wag friends like the opportunity go as the preaper good life and good shade
July 6, 2012

Science
science is the mixture ilearneed the science on the time she give my on fast day me is go for the killer and gave my juck on wag friends like the opportunity go as the preaper good life and good shade
July 6, 2012

Math
Of households in the United States, 18 million, or 16%, have three or more vehicles, as stated in USA Today (June 12, 2002), quoting the Census Bureau as the source. (a) If two U.S. households are randomly selected, find the probability that both will have three or more ...
July 4, 2012

Statistics/Math
U.S. Interstate 64 runs between Portsmouth, VA, at I-264 on the eastern end to St. Louis, MO, at I-270 on the western end. While passing through six states and five more major cities, I-64 intersects nine more interstate highways. The number of miles in each state is as ...
July 4, 2012

Statistics
Thank you, I answered this one already. :)
July 4, 2012

Statistics
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
July 4, 2012

chemistry
the book rounds the answer to 4.2 so either is fine. how do i go from here to solve for the amount of time? if you could please show a step by step process id really appreciate it!
June 18, 2012

chemistry
i get 4.207 g Cu
June 18, 2012

chemistry
suppose 250 mL of a .433 M solution of CuCl2 is electrolyzed. how long will a current of 75A have to run in order to reduce the concentration of Cu2+ to .167M? What mass of Cu will be deposited on the cathode during this time?
June 18, 2012

Chemistry
Ammonia, NH3, is a stronger ligand than Cl- but weaker than CN-. Complete the balanced equations for the reactions that are predicted to occur. CoCl6^3- (aq) + CN- (aq) ---> Co(NH3)6^3+ (aq) + Cl- (aq) ---> Co(CN)6^3- (aq) + NH3 (aq) --->
June 13, 2012

Math
Please round the number 43,678.426785 to the nearest ten thousand
June 12, 2012

math
4. Gregory teaches martial arts. He charges a one-time processing fee of $5.00 and the cost of the classes is shown below. Let x represent the number of classes and y represent the cost of classes. Based on this information, what will it cost to take 10 classes? Cost of ...
June 7, 2012

Math
What is the length of a segment whose endpoints are (5, -8) and (9,2). Please explain to me what the formula or rules for working this problem.
June 5, 2012

Math
Simplify x^2 - 9x + 18/ x^2 - 6x + 9 for all values of x for which the expression is defined. A. x-3/x-6 B. x-6/x-3 C. x-1/x+9 D. x+9/x-1 Please explain how you work this problem in detail. Thanks.
June 4, 2012

math
Marna wants to find the values of x for which the funciton below will have a value of 10. f(x) = x^2 + x - 20. Which of the following shows the correct factorization of this funciton for f(x) = 10. A. (x + 5) (x + 4) = 10 B. (x - 5) (x - 4) = 10 C. (x + 6) (x - 5) = 0 D. (x + ...
June 4, 2012

Math
Vanessa has 17 quarters, 8 dimes, 15 pennies, and 14 nickels in a piggy bank. Which of the following measures of central tendency will change if she spends 4 quarters to get a soft drink? Mean, median, mod, or none will change? Why?
June 3, 2012

Alg I
One type of decorative ribbon regularly costs $3.59 per yard. When the ribbon is on sale, it cost $2.19 per yard. Which is the closest to the difference in the cost per inch for the ribbon when it on sale compared to its regular price? A. 1.9 cents per inch B. 3.8 cents per ...
June 3, 2012

Alg I
Please explain how to solve: Laura can pressure wash her driveway at an average rate of 15 square feet per minute. Which is closest to this rate in square yards per second? A. 0.35 B. 0.24 C. 0.03 D. 0.01
June 3, 2012

Finance
Firm A has $20,000 in assets entirely financed with equity. Firm B also has $20,000 in assets, financed by $10,000 in debt (with a 10 percent rate of interest) and $10,000 in equity. Both firms sell 30,000 units at a sale price of $4.00 per unit. The variable costs of ...
May 29, 2012

medicinal chemistry
the solubility product of PbSO4 at 298K is 1.6x10^-8 mol^2dm^-6. Calculate the solubility of PbSO4 in 0.10mol dm^-3 sulphuric acid.Thanks!
May 28, 2012

medicinal chemistry
the solubility product of PbSO4 at 298K is 1.6x10^-8 mol^2dm^-6. Calculate the solubility of PbSO4 in pure water
May 28, 2012

writing
i need synonyms, antonyms, and sentences that use the following words please: illusion consecutive horizon thank you so much!
May 21, 2012

writing
what are some antonyms and synonyms for the words: illusion (noun) horizon (noun) consecutive (adjective) debut (noun) gross (adjective) monastery (noun) thank you!
May 21, 2012

Chemistry
Arrange the ions: Cu^2+, Ni^2+, Mg^2+, & Zn^2+ in order of decreasing ability to be reduced... & in order of decreasing ability to be oxidized
May 20, 2012

math
what is the answer to did you hear about... on worksheet page 106
May 15, 2012

Health
Can you please check these sentences? Thank you, Writeaacher! 1) You must be respectful of your classmates and of your teachers. You should stand up when teachers (or your teachers?) enter the classroom. 2) You mustn't drink or eat during lessons but you can do it during ...
May 15, 2012

Health
Writeacher, could you please check if these statements on school rules (and the alternatives) in brackets are possible. Thank you 1) You must have your report card every time (correction: always with you) You must wear your tracksuit if you have PE. 2) You must park your ...
May 15, 2012

math (2nd Try)
You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? These are my options: domain: 1<s<6 Range: 24&...
May 11, 2012

math
A ball is kicked from ground level into the air. Its height y, in feet, after x seconds can be represented by the equation y = 40x -16x^2. What is the total elapsed time, in seconds, from the time the ball is kicked until it reaches grond level again? Is the answer - 25 s
May 11, 2012

math
An olympic swimmer is having his laps timed during practice. To be aware of his progress, the results are shown as order pairs (l, t) below: (1,19), (2,38), (3,57) (4,76). Which equation represents t, the time in seconds, as a function of l the number of laps that the swimmer ...
May 10, 2012

Math
You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? These are my options: domain: 1<s<6 Range: 24&...
May 10, 2012

math
Thank you so much for explaining it so well.
May 10, 2012

math
The out-of-pocket costs to an employee for dental insurance and dental expenses for one year are as follows: Premium, $4000; Deductible, $300; Co-payment, 17% (after the first $300 the employee has to pay). According to the plan outlined, total annual dental care costs, c, ...
May 10, 2012

math
The value of a $20,000 car decreases every year, t. The equation below models this situation. 20000(1 - 0.04t) = 13,000 After how many years will the car be worth $13,000? Round to the nearest tenth if necessary. I was instructed that the answer is t = 8.75. How do I set it up...
May 7, 2012

Biology
In pea plants the colour of the peas is genetically controlled. Each pea represents a separate fertilisation. Smooth texture (S) is dominant to wrinkly (s) and green (G) colour is dominant to yellow (g). Following a breeding experiment with pea plants, the following ratio of ...
May 2, 2012

Chemistry
equivalence point
April 29, 2012

Chemistry
This volume of base and its corresponding pH is known as the______
April 29, 2012

Life Orientation
Ways in which Air pollution impact on the community
April 29, 2012

Health, Safety ,and Nutrition
sorry I'm working in the dark with a keyboard thats broken, but thats no excuse thanks for the reminder. I think it is flexability.
April 28, 2012

Health, Safety ,and Nutrition
A childs ability to jumpfor distance is an example of Agility or Flexability
April 28, 2012

Health, Safety ,and Nutrition
thank you Ms. Sue
April 28, 2012

Health, Safety ,and Nutrition
Which is a suitable toy for a toddler ? A a riding toy or B a walker I think it is A.
April 28, 2012

Saftey, and Nutrition
oops
April 28, 2012

Saftey, and Nutrition
B physcal is correct
April 28, 2012

Saftey, and Nutrition
A child who struggles to climb into a chair is confronting what kind of hazzard? B physcal or D enviromental
April 28, 2012

Health, Safety ,and Nutrition
Well its either C or D but my guess is the ceramic because we cook with stainless steel
April 28, 2012

Health, Safety ,and Nutrition
im not sure i cant find it in the text
April 28, 2012

Health, Safety ,and Nutrition
I dont think its A because we use styrofoam daily at work......
April 28, 2012

Health, Safety ,and Nutrition
children should not be served drinks in containers made of A. styrofoam B. uninsulated paper C. treated ceramic D. stainless steal
April 28, 2012

Health, Safety, and Nutrition
It s not A
April 28, 2012

Health, Safety, and Nutrition
A child who hasnt learned prerequisite fundamentals needed for a combination of motor patterns is suffering from A anxiety B poor mscle control C proficiency barrier D nonacquisition barrier
April 28, 2012

child developement
Is a correct?
April 28, 2012

child developement
A child throws a ball with speed and accuracy when he throws a ball to his teacher but his throws are slower and less accurate when plays with a group of friends. This difference is explained by A. classical stage theory B. probility theory C. locomotion-x theory D, Piaget,s ...
April 28, 2012

child development
A child who hasnt learned the prequisite fundamentals needed for a combition of motor paterns is suffering from A. anxiety B. poor muscle control C. proficiency barrier D.nonacquisition barrier
April 28, 2012

Physics
thanks!!!
April 28, 2012

Physics
Several volcanoes have been observed erupting on the surface of one of Jupiter's closest moons. Suppose that material ejected from one of these volcanoes reaches a height of 4.96 km after being projected straight upward with an initial speed of 132 m/s. Given that the ...
April 28, 2012

math
There are two answers to chose from: A: 16.95 B: 79.05 Which is horizontal?
April 26, 2012

math
Landon is standing in a hole that is 6.7 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. the path of the rock can be modeled by the equation y= -0.005x^2 + 0.48x - 6.7, where x is the horizontal distance of the rock, ...
April 26, 2012

math - Help
The value of a $20,000 car decreases every year, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct...
April 23, 2012

math - Additional Info
The value of a $20,000 car decreases every, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct ...
April 22, 2012

math
You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range is reasonable for the function?
April 21, 2012

math
I understand most of the explanation except the part below: n log .96 = log .65 n = -.187/-.0177 Could you please explain? Thanks
April 21, 2012

math
The value of a $20,000 car decreases every, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct ...
April 21, 2012

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