Robert

This page lists questions and answers that were posted by visitors named Robert.

Questions

The following questions were asked by visitors named Robert.

Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(co...

I'm looking for some help with my statistics homework...I'm good with the basics, but I really bombed on my last class anyone??? To help you, we need to know <I>specifically</I> what problems you have. Please repost with specific problems. I hope this hel...

Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation. Cr2O72− + 6 Fe2+ + 14 H+ 2 Cr3+ + 6 Fe3+ + 7 H2O If it takes 44.0 mL of 0.0250 M K2Cr2O7 to titrate 25.0 mL of a solution containing Fe2+, what is the molar concen...

I have a team project due on Saturday. I need to know what how to approach my first appearance. For example, indicate times I am avaliable and mode of communication (not a short bio because I have done that already). What else should I inform the group of...

Is there anyone kind enough to provide any suggestions? I see that others have been responded to at least once and not this one. What is the problem? And if its a matter of not putting a particular subject, than perhaps it should also be addressed to othe...

from informal to formal: Informal: After work, Rebecca hung with her friends for a bit. Nothing much happening. She should of headed off to the store for dinner, but instead she grabbed some junk food. Killed some time by checking out a softball game in t...

What is the name of the island in the latest Lemony Snicket book "The End" I'm sure it tells you in the book. Have you read it?? ??

what is historical context ? how do I Identify and describe details that develop the historical context of a story? Hi Robert, 'Historical Context' basically means, at what period in history the story is taking place. To identify and describe details that...

A roulette wheel with a 1.0m radius reaches a maximum angular speed of 18 rad/s before it stops 35 revolutions ( 220 rad ) after attaining the maximum speed. How long did it take the wheel to stop? Unless you mean the 35 revs occur after max speed, it can...

What type of energy always stays the same? There are chemical, electric, magnetic, gravitational, nuclear, and thermal (kinetic). All can be changed for the other. I can not think of an exception. Your teacher must have something specific in mind, I have...

This is a group with distinct national origins or cultural patterns. For example, Norwegian Americans belong to this type of group. Thank you for using the Jiskha Homework Help Forum. Do you mean "ethnic groups?"

Find the derivative. Express answer in exponential notation without any negative exponents. y= 1/(sqroot5x+2)^3 This reads: 1 divided by the square root of (5x+2) to the third

Find the derivative. Express answer in radical notation with no negative exponents. s=4(sqroot t)+(3/t)+2t^5 This reads (4 times the square root of t) plus (3 divided by t) plus 2t to the 5th. Differentiate it one term at a time, using the rule: d/dt(t^n)...

A manufacturer's revuenve in dollars is given by R(x)=1500x-0.02x^2 where x is number of units sold. Find the marginal revenue function. Use the derivative to estimate the revenue gained from selling the 35th unit. The marginal revenue function is the der...

lim (1+x)^1/x. Give an exact answer. x->0 This reads: The limits as x approaches zero is (1 plus x) to the 1 divided by x. The log of each term is (1/x) ln (1 + x) = ln (1+x)/x Using L'Hopital's rule for the limit of f(x)/g(x), the limit if the log is lim...

Find two functions that this could be the derivative of: y'=4x+7 I have one: y=2x^2 + 7x I cant think of another one!! add a constant. Remember that you can add an arbitrary constant to any integral. The derivative will be the same.

What makes a stressor worse? repetition, repulsiveness, pressure, or exhaustion

Hi, I really need help on this question, I'm stuck. Lake View Middle School is having elections for Class President. Shawn has received a certain amount of votes. April has 6 more votes than Shawn, and David has 6 times as many votes as April. Michael rec...

This problem is really confusing, I have been trying and I can't get the answer, can you help me? An Afternoon event was a race through the park. The race started at the point with the coordinates of (2,3). The first turn was at (2,6), the second turn was...

In the Monetary policy transmission mechanism, explain what could go wrong between the following points

In the Monetary policy transmission mechanism, explain what could go wrong between the following points 1. Change in the monetary policy and Change in the money supply 2. Change in the money supply and Change in the aggregate demand curve Change in the ag...

This is my assignment (actually a quiz) You work at an accounting firm and you need to design a spreadsheet for a business customer's income and expenses. The business is divided into four departments: Sales, Marketing, Development, and Executive. Each de...

Trying to study for test, don't understand. (3) Suppose that the slope of a curve showing the relationship between the number of burglaries per month (on the vertical axis) and the number of police officers (on the horizontal axis) is –0.60. a. Compute th...

Please help! Trying to study for exam! An article in the New York Times (Oct. 18, 1990) described a successful marketing campaign by the French champagne industry. The article also noted that “many executives felt giddy about the stratospheric champagne p...

The Pleasant Valley Library is moving to a larger building. To get ready for the move, the staff is packing all of the books into boxes. The library owns 35,000 books. On average, each book measures 8 inches by 10 inches by 2 inches. Each box measures 2 f...

The Rossi family wants to install new tiles on the floor on their kitchen. The tiles they plan to use are 3 in x 3 in squares. The floor space to be covered is shown in the diagram below with measurements given in feet. How many square tiles will the Ross...

The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? Ok, this is what I did: 2x+400=1050 -400=-400 ----------- 2x=650 x=325 3y+400=...

Ok, This is the question: The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? This is what I did: 2x+400=1050 -400=-400 ----------...

Could you Please help me punctuate this paragraph. on his way home from school tom found a bag on the ground is this bag yours he asked tara no its not my bag I left mine at school I think it might be emma's bag because hers is blue and green tom laughed...

Could somebody help me with this Maths squence 2N + 2, 3N - 1 , 10N + 6

The Full question is Write down the first five terms for these rules a) 2n + 2 b) 3n - 1 c) 10n + 6

bobpursley have I got the answer right to this sequence question 3n - 1 answer 2,5,8,11,14,

55. Find an equation of the tangent line to the graph of f(x) =x^3 - 2x + 1 a) at (2,5); b) at (-1,2); c) at (0,1). I believe the answers are: a) y= (3/2 x) - (3/2) b) No solution c) No solution For each function, find the points on the graph at which the...

Calculate the enthalpy change when 50. g of ice at -30.0 °C is heated to completely melt to liquid water at 0.0°C. (The heat of fusion for water is 333 J/g.)

Calculate the enthalpy change when 100. g of ice at 0.0 °C is heated to liquid water at 50.0°C. (The heat of fusion for water is 333 J/g.) 1)54.2 kJ 2)33.3 kJ 3)54,220 kJ 4)20.9 kJ

True or false? All enzymes are specific to a single substrate chemical. That is, an enzyme will catalyze reactions of one molecule only.

If x varies directly as y and y varies inversely as the square of z. How is x varies with z?

I desperately need help on the iron hypothesis and related facts: Where are HNLC waters found and why? (a map would be nice) What is the fate of the organic carbon fixed by photosynthesis in the deep ocean? How does iron enter the ocean eco-system? What i...

What is the CPT code for benign secondary Hypertension due to a benign brain tumor?

What is the ICD-9 Code for full-thickness defect, skin of right alar. The patient has a history of malignant skin neoplasms?

What is the ICD-9 Code for respiratory failure due to myasthenia gravis?

What is the ICD-9 code for acute and chronic tonsillitis?

What is the ICD-9 Code for uremic neuropathy; neuropathy de to uremia?

17 years later, 150 pounds heavier and 5 ½ feet taller, I have gotten used the American way of things, living the majority of my life California and Seattle, Washington. Does that make sense? I get a fragment line on Word. Thank you for your help.

Say a submaine has an area of 4.5m X 2.3m and it is 304.8m below sea level. And that the density of the seawater is 113.4 kg/m2 what is the pressure exerted on the submaine by the water above it?

How do you find the area of something?

finding the area of a submaine if it is 4.5m * 2.3m

Solve this : (8x^3 ) - (168x^2) + ( 864x) = 1120 please >>>>>>>>>> I need it >>> please

Hi I am looking for examples of voiceless/voiced words for the following places and manner of articulation: bilabial / nasal; alveolar/lateral; velar/stop plosive; velar/nasal; alveolar/stop plosive; post-alveolar/gliding; dental/friction; labiodental/fri...

there is 51 students in the gym class and they are picking captains and there is one left and the teams have to be even so where does the last one go

A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions: a) When the ropes are horizontal b) When the ropes...

Hello Can Anyone help me spell the word ( ACK-ROW-NIM ) For Instance DOB Is An ACK ROW NIM For Date Of Birth. THANK YOU in Advance Robert

"The graph shows types of trash in a typical American city. Find the measure of each central angle to the nearest whole number." (I do not want all the answers, I just want to know HOW to get them so I will only post the first three problems that correspo...

"Target Games: Darts are thrown at each of the boards shown below. A dart hits the board at a random point. Judging by appearances, find the probability that it will land in the shaded region." This figure is a diamond (the diamond is not shaded) and it h...

Given the initial position of a particle is x(0)=2m at t(0)=0s. At t=2s, what are the particle's (a) position, (b) velocity and (c)acceleration?

The following chemicals have the indicated formula weight Surcose = 342.3g; Potassium dihydrogen=136.09; and Tris=121.14 Also the following solution already made: 20%SDS, 5M NaCl, 500mM EDTA. You have a 40% glycerol solution, and 10X TBE. List the step to...

Hey I'm not sure how to solve this problem: An 1840 kg car is moving to the right at a constant velocity of 2.94 m/s. What's the netforce? What's the netforce if the car would be moving to the left? I'm thinking that the net force going right and the net...

List the personal and professional characteristics necessary to be an effective project manager. What characteristics are learnable?

I just want to make sure I'm doing this right... (Numbers in brackets are the square roots or electrons) "How many orbitals are completely filled in an atom that has 12 electrons? The electron configuration is 1s[2]2s[2]2p[6]3s[2]?" It would be 2 right? I...

The maximum rate of increase for a population is its......... potential.

....... capacity is the largest numbers of individuals of one species that an ecosystem can support over time. What kind of capacity???

Let's say you measure an average acceleration to be 0.3883 ms-2. What is the height (in centimeters) of the riser block? Assume the legs of the track span 1.0000 m and that there is neither friction nor drag. Also assume the block is under one of the legs...

A 2 gram bullet traveling at 1500 m/s [East] hits a 200 g block of wood at rest, and becomes embedded in it. If the block is suspended by long ropes, how high will it travel before it comes to rest?

Consider a 50.4 g sample of H2O(g) at 115°C. What phase or phases are present when 156 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J/g·°C; liquid, 4.2 J/g·°C; steam, 2.0 J/g·°C, ÄHvap = 40.7 kJ/mol, ÄHfus = 6.02 kJ/mol. (S...

how could you use 5 x 6 = 30 to find the product of 6 x 6

(#1.) A top starting from 40 rad/s takes 200 rad to stop. What is its rotational acceleration? (a constant) (#2.) A stationary 100 Kg circular object (r= 0.20 m) is on a 35 degree incline. The coefficient of rolling friction between the block and the incl...

A tire (0.8 m diameter) starts at rest and has an angular acceleration of 5 rad/s^2. If it moves for 10 seconds and then stops abruptly causing a blob of mud at the top of the tire to fly off, how far along the ground will the blob travel until it hits th...

A solid-phase extraction cartidge has C18 material. What is the reason behind that all the characteristic grape juice color get transferred to the packing material of the cartridge?

Spectrophotometric measruments give us a little information about the comlpexity of the fractions that we obtain by solid phese extraction. To determine the identity and number of the compounds each fraction has , what should we do?

10 ways to make .50 only using quarters, nickles and dimes?

0.810g/mL-1.375g/mL-2.046g/mL are these numbers precise or accurate or both?

I have been out of school for a very long time and I just enrolled to take some classes online and I am having a lot of trouble with my math. I just cannot seem to understand what it is that they want. Is there anyone that can help me with this. I am desp...

A two end open pipe organ's sixth harmonic is produced by a tuning fork with a frequency of 440 Hz. If it is 17 degrees Celsius, what is the length of the tube?

Find the slope of the line that goes through the given points. I would apprecaite some feedback to this ?, but I think I have an idea how to figure it out! (3,-2),(-1,-6)

Please help me translate this short letter. Dear Juan, If you do not want your girlfriend to leave, you need to listen to me carefully. You were wrong. In a relationship, no matter the situation, the guy is always wrong. Be a man and tell her you made a m...

Please help me translate. Dear Juan, If you do not want your girlfriend to leave, you need to listen to me carefully. You were wrong. In a relationship, no matter the situation, the guy is always wrong. Be a man and tell her you made a mistake. I am sure...

If every seven digit whole neumber is a possible phone number, except those that begin with 0 or 1, what fraction of telephone numbers begin with 9 and end with 0?

I need to find the quotient function of the following: Given that f(x)=x^2-3 and g(x)=2x+1 find each of the following if it exists: a. (f/g)(-root3) b. (g/f)(-1/2)

When Let f (x) = x^2 – 3x + 8 and g(x) = x – 5 Find Find the composite function of (fºg)(x) and simplify Find (fºg)(2) Find the composite function (gºf)(x)

Which of the larger 7 traditions of communication does Gerbner's work fall into?

Exrpess each number in terms of i a. root-21 b. -root-59 c. -root-9 d. root-28

I have a question regarding this problem below? I noticed it in an eariler post, and have come to figure that my text book has it like this? What would be the solution for this? x+sqrt(11-x)= 5 x = 2? OR 2,7? OR NO solution? I say x = 2 only? Any Thoughts...

name all the presidents

what does co2 mean

the ? describes the steps you use during an experiment?

the ? is the part of an experiment that is not being tested and is being used for comparison.

The ? variable is the part of the experiment that is affected by the independent variable

the ? is an educated guess

Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2 C8H18(l) + 25 O2(g) ---> 16 CO2(g) + 18 H2O(l) DHo = -11,200 kJ Given : DHfo [CO2(g)] = -393.5 kJ/mol and DHfo[H2O(l)] = -285.8 kJ/mol. Calculate the enthalpy of for...

who here knows about box and whiskers

What fraction of the data 14 8 13 20 15 17 1 12 18 10 is greater then 13.5 please make a box and whisker plot

In the aftermath of the 9/11/2001 terrorist attacks on America, and the resulting War on Terrorism by the United States, what reasonable and legal limitations should their be on the First Amendment?

Which of the following will not increase the rate of a reaction? a. using a catalyst b.increasing the temperature c. decreasing the concentration of a reactant d. finding a shorter path for the reaction to take place e. increasing the kinetic energy

0.02 round to the nearest hundreth

27.671 round to the nearest hundreths

Answers

The following answers were posted by visitors named Robert.

apples- 55 cents oranges- 75 cents

Having trouble with this question on study guide. Please Help! (1) An article in the New York Times (Oct. 18, 1990) described a successful marketing campaign by the French champagne industry. The article also noted that “many executives felt giddy about t...

For Part A: I multiplied 2*3*2= 12 feet Then I multiplied 10*8*2=160 feet Then I divided 35000 by 13 and got 2692.3, then I rounded it to 2, 692. Is this right? Part B: I really don't understand this one. I tried but I just can't get the answer.

by dividing 5 into 5 and it equals 1 with a square root of 2 and that equals 1.

Ok, I'm really confused. Where did you get 800? I don't really understand. Is it like this: 2(S+A)=400 2S+SA=800 Is this right? If so, what do I do after this?

On his way home from school, Tom found a bag on the ground. "Is this yours?" he asked Tara. "No, it's not my bag! I left mine at school. I think it might be Emma's bag, because hers is blue and green." Tom laughed and said, "You may be right, she is alway...

Is this puncuated correctly

bobpursley is this the correct answer to the sequences question 3n-1 Answer 2, 5, 8, 11, 14,

67. dy/dx = 0 Would it be all the points of the function.

Must use meters, not kilometers.

1)54.2 kJ 2)33.3 kJ 3)54,220 kJ 4)20.9 kJ Those are possible answers... Which is it?

Never mind, I got it: 100 grams of ice times 333 J/g = 33.3 kJ of heat to melt all the ice. Next, raising temperature of liquid, so 100 g *4.184 J/g *50= 20.92 kJ Thus A is best answer

part a) 0.187/35.453 = 5.27 x 10^-4 moles of Cl part b) 50 ml = .05 l part a divided by part b = 1.05 x 10^-2 M

Question: All enzymes are specific to a single substrate chemical. That is, an enzyme will catalyze reactions of one molecule only.

I like your way of phrasing things better. It flows a lot better. Thank you.

See that's exactly what I thought, the 22% one was #1 but when I checked it in the back of the book it said it should be 25. Could the book be wrong? (It also says #3 should be 32)

Yeah it left me clueless too, oh well, I will just have to hope I get them right. XD

I only describe one because that is the one I am having trouble with, the others were simple since it would show a figure composed of 5 triangles and only 2 would be shaded. (2/5)

Oh okay thank you very much.

1)B 2)C 3)C 4)D 5)D 6)C 7)B 8)B 9)C 10)B 11)A 12)C 13)A 14)B 15)D 16)C 17)A 18)D 19)A 20)D

Yeah this is from a physics lab. It was for a "Energy Works" lab where we trying to proof conservation of energy. Total energy = KE + Ug. We had a 2.2m long Dynamics Track with Dynamics cart. We used a "riser block" which was a wooden block to raise the T...

The 2d drawing that goes with #2 shows a circle at the top of an incline. \

Whichever one is the easiest to analyze.

sqrt(1440) = 37.94733192

sin(15) = sin(45-30) sin(45)cos(30) - cos(45)sin(30) ^ Plug in values

I know you use deltaTheta = 1/2(wi + wf)deltaT, but I don't know how to solve for the wf or t of the mud (the final velocity or the time it's in the air)

Oh, so you just convert the rotational motion into linear motion that can be used in a kinematic equation! Now I get it! Thanks!

This is what I got. Which is correct? I don't know if you -6 - - 2 = -6 + 2 = -4 -1 + 3 = 2 -4/2 = -2 Slope m = -2

Thanks for the help!

Translate to spanish please.

Please help. This is urgent.

a. 60 b. 60 c. 30*30+12=912 d. atc= (3600+60*30)/30=180 e. increasing, decreasing

Please someone?

I am sorry, but I am not familar with Sra. Does she usually check this site frequently?

240-80 = 160 acres Sunflowers = 80 acres flax

To present displays and information, usually in slides.

what is the square root of negtive 80

The Theme and writting style

Something like that. I need to know what his work fell into based on the 7 traditions of communication. Which of the seven best defined hs work? Rhetorical Semiotic Phenomenological Cybernetic Socio-Psychological Socio-Cultural Critical I would say either...

Thank you! I am leaning towards Socio-Psychogical. Thank you all for your insight!

The way it is written is x+sqrt(11-x)= 5 x+ sqrt sign11-x = 5 the x is under the root sign then = 5 Would this still have the same conclusion? 2,7, or just 2 ?

I ran this through an equation solver and it it tells me x = 2 only?

I am going to say b

i think it means don't judge a man if he hasn't walked on the moon or moons

yes but i would rather use commas instead of semicolons anyway it is a good sentence.

your welcome MC.

Ms. Sue is right

because for example a line graph can go up or down but it can also go diagonal

Remember the verb splits the subject and the predicate

you are no help

Kaitlyn, it is to show the distrubutions of the data set

Why not? This has happend already by the Patriot Act of 2001, or would you not agree?

why did they sign the treaty

I keep getting 1.479, but the program I use for homework keeps counting it wrong. Am I totally off?

I forgot to say 1014 millibars-so how do I convert millibars to atm for my problem Thank you

Well, the area of a rectangle is 1/2bh Base times height That should help.

Thanks for this help!

Nevermind, I got it. a) 78 N b) 0.35

A 35in. tv set has a width of 28 in, what would be the hight?

I have to do a Literary criticism on the author Jules Verne and the books. The problem I have is thinking of a good enough thesis statement that will help me get started on writing my essay.

Never mind. I realized that you want the force of friction to equal the force of tension. Thus when you set it up, you find the normal force and subtract the current way. Ft=Ff Ft=mu x N N-Ma=Mc

6/10 is how long he taught 8th grade so 10 - 6 = 4 is how long he taught something else. The new fraction would be 4/10 but if you simplify it, 2 being the common factor in both you would get 2/5 4 = 2 * 2 10 = 2 * 5

Thank you so much. I'm confused about one thing though, what does CCT and CT stand for? is it Torque? Or is that another way for center of mass

Ahhh, thank you, a lot clearer :)

Another question in regards to CT. I know CT refers to the clockwise turn of the meter stick but how can you picture it going in that direction? With no weight on the ruler, isn't it at an equilibrium?

After reading your comment and picturing a see saw, now I get it. Thank you soooo much and have a happy holiday :)

Can't figure it out. Does it have something to do with finding w? w=2pi/T = square root of k/m but I don't have K or T?

It would help him throughout his presidency,because that was his advisors or cabinet members.

How do you solve the equations? ):

Thank you so much!!!(:

An enjoyment of solitude

or to be more specific, one half the base times the height. so one half of 16 times 31, or 8 times 31.

i figured out the f^-1(x) is the ln ((-13x-6)/(17x-5)) i just need a and b plz help before 11 pm

Solved it. Thanks.

mass of ball = w/g Acentripetal = v^2/R Force in rope = T up force of gravity down = m g = 71.2 N F = m a T -W = Ac*M T = W + Ac*M

MrMath, please do not post any answers to this question. My daughter, thinking she would help me with homework posted this. I appreciate your time but do not need any assistance as I have a good understanding of the material. I have asked the site to dele...

Thank you sir:)

Carol is correct. I just had this problem on my online test.

yes it is, as: w^2-13w+42=0 (w-7)(w-6)=0

64----> 32---> 16----->8 1 2 3 There are 3 half life. Divide 42/3 = 14 days

The defining of reproducable physical measurments was made in a way that allowed scientests to validate each others findings. The boling point of pure water at 1 atmosphere of pressure is by definition 100 degrees C. For every day common use 1 standard at...

Sorry, but my brothers typed some questions also so they used their name.

Can someone please check my answers?

T=I divided by PR