Monday

April 21, 2014

April 21, 2014

Total # Posts: 1,318

**Algebra**

Two trains, one express and one local, leave Indianapolis at noon and head for Chicago 220 miles away. The express travels twice as fast as the local and arrives 2 hours ahead of the local. Find the speed of each train.

**Physics**

A current of 60 mA passes through a loudspeaker of resistance 6 Ω. What is the potential difference across the resistance of the loudspeaker? 36.0 V 10.0 V 0.36 V 0.10 V Answer B seems like it would be the obvious answer..

**Algebra**

The difference between the digits in a two-digit numeral is 3. The units' digit is twice the tens' digit. Find the nuermal.

**alegbra 1**

top and bottom margins are 7/8 inch there are 5 rows of pictures with 3/16 inch between the vertical what would be the height of each picture

**math**

Courtney wanted to share raisins with Norman and Mark. She counted 36 raisins in her box. She said "If we all have the same number of raisins, there are 98 raisins in all." What is wrong with Courtney's statement?

**math**

sorry I post 56 instead of 58, the dimensions are 20ft by 58ft

**math**

The dimensions of the dog part are 20ft by 56 ft. Set up the problem w + w + ( 3w - 2 ) + ( 3w - 2 ) = 156

**science**

Three lead balls of mass m1 = 14 kg, m2 = 26 kg, and m3 = 8.7 kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force.

**physics**

At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. People sit in seats facing the axis, their backs against the outer wall. At one instant the outer wall moves at a speed of 3.04 m/s, and an 65.2-kg person feels a 290-N forc...

**Physics**

A balloon carrying a basket is descendign with a constant acceleration of g/3. the total mass of the basket and contents is mB.you see water below and decide you need to throuw out some mass to allow the basket to rise and not hit the water. how much mass should you throw out ...

**physics**

A crate is pulled to the right with a force of 84.5 N, to the left with a force of 116.5 N, upward with a force of 685.7 N, and downward with a force of 242 N. What is the net external force in the x direction?

**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 forc...

**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

**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?

**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...

**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 c...

**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

**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?

**math**

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

**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 i...

**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 ...

**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 p...

**chemitry**

what does it mean by how many moles of the limiting reactants in sodium bia

**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?

**geometry**

Steve, thank you so much. You explained it so I could understand it.

**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.

**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?

**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? ...

**business**

What is most important about section 179 depreciation?

**calculus**

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

**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

**calc**

got it, thanks!

**calc**

Suppose that f(x) = 1/x. Find a simplified expression for f(x)-f(a)/x-a

**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

**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.

**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?

**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.

**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.

**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. :)

**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.

**geometry**

In Geometry how do I calculate the precion of 14 meters?

**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?

**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

**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?

**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 b...

**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

**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?

**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 ...

**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

**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

**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 vehicl...

**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 follow...

**Statistics**

Thank you, I answered this one already. :)

**Statistics**

How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?

**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!

**chemistry**

i get 4.207 g Cu

**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?

**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) --->

**Math**

Please round the number 43,678.426785 to the nearest ten thousand

**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 classe...

**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.

**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.

**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 + ...

**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?

**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 in...

**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

**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 producti...

**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!

**medicinal chemistry**

the solubility product of PbSO4 at 298K is 1.6x10^-8 mol^2dm^-6. Calculate the solubility of PbSO4 in pure water

**writing**

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

**writing**

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

**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

**math**

what is the answer to did you hear about... on worksheet page 106

**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 t...

**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 scoot...

**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&...

**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

**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 ...

**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&...

**math**

Thank you so much for explaining it so well.

**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, dep...

**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...

**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 p...

**Chemistry**

equivalence point

**Chemistry**

This volume of base and its corresponding pH is known as the______

**Life Orientation**

Ways in which Air pollution impact on the community

**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.

**Health, Safety ,and Nutrition**

A childs ability to jumpfor distance is an example of Agility or Flexability

**Health, Safety ,and Nutrition**

thank you Ms. Sue

**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.

**Saftey, and Nutrition**

B physcal is correct

**Saftey, and Nutrition**

A child who struggles to climb into a chair is confronting what kind of hazzard? B physcal or D enviromental

**Health, Safety ,and Nutrition**

Well its either C or D but my guess is the ceramic because we cook with stainless steel

**Health, Safety ,and Nutrition**

im not sure i cant find it in the text

**Health, Safety ,and Nutrition**

I dont think its A because we use styrofoam daily at work......

**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

**Health, Safety, and Nutrition**

It s not A

**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

**child developement**

Is a correct?

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