Ray

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

Questions

The following questions were asked by visitors named Ray.

evaluate if possible 1. square root -121 A not a real number 2. 3cube-8/27 would this be 3cube -2/3 number 1 is correct i've had that one in my homeworks previously. number two i am not sure how it would actually look 3^3+ (-8)/(27)= If so to reduce it I...

What is the difference between gross income and disposable income? If I want to know which countries are prosperous, which one should I look at?

What does mutually exclusive mean? Can anyone give me an example?

I want to use a large number of small items to construct one big item. The big item must have a relationship with the small items such as making a bowl or spoon out of cheeios. Please give me some ideas. Thanks

The Parkhursts used 160 yd of fencing to enclose a rectangular corral and to divide it into two parts by a fence parrallel to one of the shorter sides. Find the dimensions of the corral if its area is 1000 yd^2 Thank you!

A rectangle has dimensions of 12x8inches. If a uniform border is added, then the new rectangle has twice the area of the old rectangle. a) Find the width of the border b) find the new dimensions of the rectangle

A 522g piece of copper tubing is heated to 89.5C and placed in an insulated vessel containing 159g of water at 22.8C. Assuming no loss of water and a heat capacity for the vessel of 10.0J/K, what is the final temperature of the system ( c of copper = 0.38...

Find dy/dx by implicit differentiation. sqrt(3 x+y)=2+x^2y^2?

find answer 5.which of the following sentences has a compound predicate b.while he swam she collected shells c.she washed the shells and dried them in the sun d.on the way to the bank the interest rates went down

Can give me example in relation to the 6 steps of the Rational Decision -Making Model? There are no examples in the textbook.

When Mcdonal's corp reduced the price of its big mac by 75% if consumers also purchase french fries and a soft drink. the company was hoping the novel promotion would receive its U.S. sales growth. It didn't. within two weeks, sales had fallen. Using your...

What are the 4 differences between Strategy Formulation and Strategy Implementation?

A lead ball is dropped into a lake from a diving board 5.42 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.98 s after it is dropped. (Assume the positive...

How many cubic centimeters of water are required to fill a graduated cylinder to he 50.0 mL mark? How?

A small solid sphere, with radius 0.25 cm and mass 0.61 g rolls without slipping on the inside of a large fixed hemisphere with radius 17 cm and a vertical axis of symmetry. The sphere starts at the top from rest. (a) What is its kinetic energy at the bot...

A Texas cockroach of mass 0.17 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has radius 15 cm, rotational inertia 5.5 10-3 kg·m2, and frictionless bearings. The cockroach's speed (relative to the...

In a playground, there is a small merry-go-round of radius 1.20 m and mass 190 kg. Its radius of gyration (see Problem 85 of Chapter 10) is 91.0 cm. A child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initial...

A diver of weight 730 N stands at the end of a diving board of length L = 5 m and negligible mass. The board is fixed to two pedestals separated by distance d = 1.5 m. What are the magnitude and direction of the force on the board from the left pedestal?...

A tunnel of length L = 141 m, height H = 6.9 m high, and width 6.0 m (with a flat roof) is to be constructed at distance d = 60 m beneath the ground. The tunnel roof is to be supported entirely by square steel columns, each with a cross-sectional area of...

Some people believe that the Moon controls their activities. The Moon moves from being directly on the opposite side of Earth from you to be being directly overhead. Assume that the Earth-Moon (center-to-center) distance is 3.82 multiplied by 108 m and Ea...

A orbiting satellite stays over a certain spot on the equator of (rotating) Mercury. What is the altitude of the orbit (called a "synchronous orbit")?

A block of wood with volume V floats in water with 0.68V submerged. In oil the block floats with 0.86V of its volume submerged. What's the density of the wood?

atthew interviews the director of computing services to get information for the company newsletter. What part of the writing process does this activity represent? Writing Editing Revising Planning

What is a possible explanation for the significance of two separate flood myths in which the water comes from the sky (Guatemalan mythology) and in the other, the water comes from the ground (African mythology)?

Simply: cot(-x)-1/1-tan(-x) Is it -cotx? The other answer choice is: cotx.

A 1.15 kg block slides down a 19.0 m long 29.0° incline at constant velocity. How much work is done by friction?

If cos^2 theta -6 sin 2 theta =0, one value of theta is a)0 degrees b) 90 degrees c)180 degrees or D)255 degrees. Please show me how to do it and not just give answer cause I have two more questions that are similar. Thanks so much.

I need to write this parabola question 2(x+3)^2 -1 in general form. Not sure how to do it. Do I sqaure whats in brackets first? x^2 + 6x +9 then *by 2 so 2x +12x +18 - 1 = 0 Would this be the answer or am I doing it wrong? Any help appreciated.

At Shannons birthday Kira ate 3 pieces, Brazdley ate 2,Shauna ate 4, and Sammi ate 3 pieces of pizza. Now 1/4 of the pizza is left. How many pieces was the pizza originally cut into?

1)What theory does the narrator propose in the first paragraph of “The Mark of the Beast”? A) In Asia, Asian gods rather than the Christian God control most events. B) The British Empire is doomed because it disregards the values and traditions of native...

Ok we have to graph a step function. I am given y=[-5x]. How do I write the chart for this in order to graph it?

Center and radius of x^2 + y^2 – 4y = 0.

a pendulum of the length L is suspended from the ceiling of an elevator. When the elevator is at rest , the period of the pendulum is T. In instant when the pendulum reaches its highest position the elevator starts the free fall. What is the period of the...

If the decomposition of 3.785 g iron (III) chloride yields 1.302 g iron and 2.483 g chlorine, how many grams of iron and chlorine are produced when 2.175 g iron (III) chloride decomposes?

What will be the final temperature if 2000g of copper at 95 degrees loses 10 kcal of heat?

Propane gas is used to heat a tank of water. If the tank contains 200 L of water, what mass of propane will be required to raise its temperature from 20 degrees C to 65 degrees C. The heat of combustion for propane is -2220 kJ/mol.

A building cast a shadow 42m long. At the same time, the shadow cast by a 34 cm tall pole is 86 cm long. Find the height of the building

I need to write the specified ratin as a simplified fraction. A certai lake is 1100 ft deep. A nearby lake is 300 feet deep. Write the ratio of te fist lake's depth to the second lake's depth.

Solve the proportion for u. (u-2):(u+3) = 4:3

A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 2.00 J, find (a) The force constant of the spring and (b) The amplitude of the motion.

How many grams of phosphorus can be obtained from the decomposition pf 45kg of POCL3. 2 POCL3 --(> 2P + 3Cl2 + O2

where can i find help about direct and indirect objects

I find these questions so difficult! I've been trying to solve them but I just can't. As they are diagrams they are hard to express in words, so the questions are the links below: 1) tinypic(.)com/r/25z7486/7 2) tinypic(.)com/r/4uhrg3/7 3) tinypic(.)com/r...

help me translate please!! i tried it myself but it was a mess! :( My name is Isabella and I am 14 years old. I live with my parents and two brothers in the outskirts of Newport. My school is a few miles away from where I live, I go to school by coach but...

How is an ELL's level of language proficiency determined? How do you modify your assessments to evaluate ELLs understanding of content?

How do you modify a lesson to teach ELLs?

Compare and contrast the teaching of comprehension strategies to ELL students and to native English speakers.

Describe the difference between word-level skill and text-level skill attainment for ELL students. Then, describe specific things teachers can do to increase ELL students' text-level skills.

How much is 2000 kg in outer space?

A solution of HNO3 has a pH of 4.5, What is the molarity of HNo3?

Out of 42 kids in a class twice as many failed Ela as math,4 failed both. If 7 failed neither, find how many failed each subject. Please help and show work it would be great thanks i really need help thanks

The following logistic function describes the percent of the population of a city that will purchase the local newspaper. P(t)=(65)/(1+34e^(-0.223 t)) "t" is the number of days since the newspaper is first launched. When will the newspaper reach 60% of th...

A sample of glucose, C6H12O6, contains 1.300x10exponent21 atoms of carbon. How many atoms of Hydrogen does it contain? How many molecules of glucose does it contain?

A card is selected at random from an ordinary pack of 52 playing cards.state the probability the card is a club.

You are given a vector in the xy plane that has a magnitude of 70.0 units and a y component of -55.0 units. What are the two possibilites for its x component? Please explain, thanks! :)

On tuesday you all took the science and then your social studies final exams. What is the probability of you passing your social studies final exam given that you know that you passed your science final exam first ? The probability of you passing both is...

Explain another way to help you find the product of 8x6 without repeated addition.

A pole-vaulter of mass 60.2 kg vaults to a height of 6.1 m before dropping to thick padding placed below to cushion her fall. (a) Find the speed with which she lands. (b) If the padding brings her to a stop in a time of 0.52 s, what is the average force o...

Adrian said that any 2 digit number with 2 identical,digits is divisible by 11. Do you agree? Explain.

NUMERICAL EXPRESSION- 12 TIMES AS LONG AS 2 IN.

There are 25 books in a bookcase. The books in the bookcase are all math, science, and history books. Seven of the books are math books. There are 4 fewer science books than history books. How many science books are in the bookcase?

what is the mass of a playset that is moved with 580n of force for 11 seconds at 1.5 m/s?

You have 43 marbles. You divide them equally among some sacks. How many sacks must you use to get fewer than 8 marbles in each sack?

Describe how you can use a number line to order the fractions 3/7, 5/7 and 1/7 from least to greatest.

A baseball player uses a bat with mass mbat to hit a ball with mass mball. Right before he hits the ball, the bat's initial velocity is 36 m/s, and the ball's initial velocity is -20 m/s (the positive direction is along the positive x-axis). The bat and b...

The molar mass of Cl is 35.45 g/mol. What is the mass of the chloride atom in grams.?

The box decelerates at a rate of 3m/s and skids 24 meters becoming to a stop.How fast were you traveling when the box fell out.

If int main() { int a=1; int *p; how do the following statements differ 1) p=&a; 2) *p=&a; 3) p=a; 4) printf("%d",p); 5) printf("%d",*p); and what does int **a mean

What is the historical and current impact of the biomedical issue in abortion?

Pt. 1 Gas in a container is at a pressure of 2.3 atm and a volume of 6.1 m3. What is the work done on the gas if it expands at constant pressure to five times its initial volume? Answer in units of J My wrong answer: 56.12 Pt. 2: What is the work done on...

Each equal side of an isosceles triangle is 3 1/2 inches longer than the base. The perimeter of the triangle is 2 feet. Find the length of its base.

F(x) = x^5 ln x A) Find the interval on which f is increasing Find the interval on which f is decreasing B) Find the local minimum value of f C) find the inflection point (x,y) Find the interval in which f is concave up Find the interval in which f is con...

Imagine you are an astronaut who has landed on another planet and wants to determine the free-fall acceleration on that planet. In one of the experiments you decide to conduct, you use a pendulum 0.47 m long and find that the period of oscillation for thi...

Does the series ln/n^2 converge using the L'Hoptial's rule also. I know you can use the integral test but I have also seen others using the L'Hopital's rule on a very similar funciton ln/n^3 to see that it does converge.

A 1.0 102 g piece of copper at a temperature of 460 K and a 2.0 102 g piece of aluminum at a temperature of 2.2 102 K are dropped into an insulated bucket containing 5.0 102 g of water at 280 K. What is the equilibrium temperature of the mixture? (Use the...

Boron is used to dope 1 kg of germanium (Ge). How much boron (B) is required to establish a charge carrier density of 3.091e7/cm^3. One mole of germanium has a volume of 13.57 cm^3 and weighs 72.61 gram. Give answer in grams of boron? I have no idea how t...

The parachute on a race car of weight 8,810 N opens at the end of a quarter-mile run when the car is traveling at 34 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1,100 m?

find range for g(X)= -cos4x

1) log(9 – x) – log(6 + x) = 1 2) e^2x + e^2x = 1 3) 2e^6x + e^6x = b

10log(5x + 40) = 10

A battery with an emf of 14.5 V and internal resistance of 0.83 Ω is connected across a load resistor R. If the current in the circuit is 0.81 A, what is the value of R?

The pH of a .10M HOBr solution is 4.8 1. What is [H+] in that solution? 2. What is [OBr-]? What is [HOBr]? (where do the H+ and OBr ions come from?) 3. what is the value of Ka for HOBr? what is the value for pKa?

Calculate the heat released when 454 g of steam at 100.0C condenses and then cools to 30.0C. State your answer in calories.

A mixture of He Ne and 3rd gas exhibit a total pressure of 486 mm hg if the partial pressure of He125mm mm hg and partial pressure of Ne is 214mm hg what is the mole fraction of the 3rd gas in container

Citric acid (H3C6H5O7) is triprotic acid which reacts with NaOH according to the balanced chemical equation shown below what volume of 0.200m Naoh is required to titrate 7.50ml of lemon juice which is 0.245 m in citric acid? H3C6H5O7+3NaOH->Na3C6H5aO7+ 3H...

A thin, double-convex lens has a refractive index of 1.50. The radius of curvature of the front surface is 15 cm and that of the rear surface is 10 cm. See sketch. (a) How far from the lens would an image of the sun be formed? (b) How far from the lens wo...

An eyepiece is made of two positive thin lenses, each of focal length f = 20 mm, separated by a distance of 16 mm. (a) Where must a small object viewed by the eyepiece be placed so that the eye receives parallel light from the eyepiece? (b) Does the eye s...

squareroot of 8 * exponents 3

Is it passive or active voice? Many clothes (we're given) to the homeless shelter. Passive By the end of today, the students (will have mastered) the grammar. Active My aunt Margot ( has been traveling) with her daughter. Active The cookies (have been eat...

Where can I find a good, reliable source on the internet about the Bermuda Triangle? I would like a PDF with at least a few pages and I specifically am looking for scientific explanations. Sites that end with edu or gov would be great. I have been searchi...

1.the trip led to an argument between Helen and ____ a.I b.me 2. It was ____ who demanded an apology from the newspaper. a.we b.us 3. We appreciated ____ writing a personal letter to explain his stand on the issue. a.his b.him 4. The most outspoken critic...

A trash can with a mass of 5 kg has a coefficient of static friction of μs = 0.80 and a coefficient of kinetic friction of μk = 0.22. (The Active Figure applies to a similar situation, but the values of the mass, coefficient of static friction and coeffic...

A block with a mass of 1.0kg is lifted up slowly from ground (0m) to height of 0.51m. block is slowly displaced horizontally by .10m. find total work done to displace block vertically and horizontally. Then find total work to lift block and move it horizo...

A class survey in a large class for first-year college students asked, "About how many minutes do you study on a typical weeknight?" The mean response of the 463 students was x = 118 minutes. Suppose that we know that the study time follows a Normal distr...

The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable - one three-digit number wins $600 and all others win nothing - that gamblers never reach "the long run." Even after man...

How to -2x+6y=-26 8x+6y=-1 6using elimination method

Is there a way to calculate the moment of inertia of a hanging mass (3.1 kg) without length & width dimensions?

Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The results showed that the average tread life was 52,515 miles with a standard deviation of 3,550 miles. What is the best estimate of the average tread li...

A survey of an urban university (population of 25,450) showed that 878 of 1,119 students sampled supported a fee increase to fund improvements to the student recreation center. Using the 95% level of confidence, what is the confidence interval for the pro...

Answers

The following answers were posted by visitors named Ray.

The problem is that the instructor makes it seem as if all that we need to know with regards to describing the society can come from "The Body Social" alone. So, I guess a reasonable question thereafter might be: what types of society were/are there? This...

How would life be witout a skeleton?

What was the purpose of the open door notes introducxe by John Hay ?

which sentence contains a prepositional phrase with the proper help theyll complete the project early running all the way he got there early they sang it and sang it again they tried although they didn't expect to win

Thanks Lotta, it helped

Thanks Lotsa, it helped

Are you saying that (3m^(7k)^(-5))^(-3) is the problem given?

It seems like you're multiplying these together and if that is the case you will be adding the exponents. So, -10 + 5 will equal -5. Since it's asking for the answer to have positive exponents you will just have to show that b^-5 = (1/b^5) and there is yo...

Multiply it out then flip your answer. The numerator will become the denominator and likewise.

I think you're missing the question...

1/6 or 1/2x1/3=1/6

i need the answers! i don't have them

Thanks alot I really appreciate it

THIS IS A GUESS!!! silent killer means that you might die instantly. If you have a high blood pressure, you might die.

What are some words of wisdom to think about when teaching ELLs?

Thanks so much! I should have thought of the pythagorean therom, but why x^2=70^2-55^2 rather than x^2+(-55^2)=70^2?

using the kinematic equation: displacement=initial velocity*time+ .5(acceleration*time^2) delta x= 0*7.8+.5(2.3*7.8^2) delta x= .5(2.3*7.8^2) delta x= .5(2.3*60.84) delta x= 69.966 m with sig figs your answer would be 70 m hope this helps!

The scores on a test are normally distributed with a mean of 140 and a standard deviation of 28, what is the score that is one standard deviation above the mean?

The scores on a test are normally distributed with a mean of 140 and a standard deviation of 28, what is the score that is one standard deviation above the mean?

THANK YOU I HAD A HARD TIME UNDERSTANDING

Suppose there are two defective items in a pool of five items. You want to test one item at a time until you identify the second defective item. Find following probabilities a. You need four tests. (i.e. The second defective item will be found at the four...

It still says its the wrong answer. Let me calculate it again

For some reason its still saying its the wrong answer

Your saying g=9.06

And the answer that I have is wrong

I'm sorry for Aluminum its 0.215 and for Copper its 0.0922

The grams for Aluminum are 2.0e2 and the temperature for Aluminum is 2.2e2. The grams for water is 5.0e2.

Thank you Elena!

Oh never mind I figured it out.

Hey Lijia. I'm well aware that you most likely will never see this, but you're a moron.

i had trouble with this problem too

Sorry my iPad did that by itself

Force of gravity=(Gm1m2)/(r squared) m1g=(Gm1m2)/(r squared) g=(Gm2)/(r squared) m2=Krypton's mass=7.1x10^23 kg r= Krypton's radius=3.3x10^6m G=6.6726x10^-11 (N x m^2)/kg^2 Plug in the numbers. You should get 28.265875m/s^2

1. The extra money being raised by the band booster club has been (earmarked, maneuvered) to fund future trips. maneuvered 2. The Labrador retriever received a medal from the fire department for its( valiant, compact) act of saving a drowning man. valiant...

6. Aunt Lorna (conferred, balked) when the waiter at the seafood restaurant told her that the dinner special- the "cach of the day"- was $41.00. conferred

So my answers were correct! It's d,c,d,b you WILL get 100!!

I'm looking for this same question...

Thanks for replying Steve I just wanted to ask how did you get p(n) = (n - 107/12)/(n - 100/12) after solving for b and c?

Is my answer correct? w=(29/1)(2pi/1) w=~182.2124 rad/min v=(1.8)(182.2124) v=~327.9823 feet/min

1. A 2. D 3. B 4. B Correct answers. Put these in and you will receive full credit.

I suppose tying a tie might work. Would that really take 10 minutes to complete that action though? haha

Thanks for your possible ideas! Maybe drawing might work since that's pretty simple. I'm terrible at drawing but I think I could come up with something with that. Suppose copying a simple drawing would take about 10 minutes.

I deleted a couple of things...these are the individual sentences I have so far... The enthusiasm I have for my hobby of collecting and cataloguing comic books is why I am applying for the position of Data Entry at DC Comics. While I was studying as a Lib...

This is my 2nd revision of Paragraph 1 ...any feedback and suggestions would be appreciated. Paragraph 1 The enthusiasm I have for my hobby of collecting and cataloguing comic books is why I am applying for the position of Data Entry at DC Comics. While I...

Another edit... Paragraph 1 I am applying for the position of Data Entry in the Archives Department at DC Comics because of the enthusiasm I have for my hobby of collecting and cataloguing comic books. While I was studying as a Library Technician at Fansh...

Thanks for the help! I wanted to ask how did you know that we're supposed to divide (7.2/5.7) and not the other way around?

In this case, would a=-15 and b=3?

I know setting x(t)=cos(t) and y(t)=-sin(t) will make the circle travel clockwise but I'm not sure exactly on how I can make it start at the specific point (0,1)?

Any ideas anyone?

1/4 mile long and 1/4 mile wide. so he had 16 fields in the beginningng

Thanks for the correction! I understand now

So far I tried to figure out the slope of each secant line: For x=1 the slope is 1/3 For x=3 the slope is 2-sqrt(3) For x=5 the slope is sqrt(5)-2

I'm not sure either. But I think it is more of a hypothetical question because another question asked me: "What is the limit of f(x)=7 as x approaches pi?" and that answer was 7.

Alright thanks, just wanted to double check because for some reason my teacher only allows us one attempt on each question on our online homework. Life is so unfair.

Got it, thanks for the help!

$20.00-$9.50=$10.50 The customer will receive $10.50 in change for paying a movie ticket at $9.50 with a $20.00 bill.

Aren't we supposed to multiply 50.0g by 0.001? Where did 1E^-5 come from?

I see, this was a lot simpler than I expected! Thanks so much

I understand your math, but where did Oxygen started with 2 of them to be O2? Is it because of the charges?

Remember we're looking at its validity of a website. Therefore you wouldn't want biased information. Yeah sure the website may be professional looking, but that doesn't mean that it's valid and genuine. You would want up to date and accurate information i...

I would say it's all of those. All of your equipment would be useless if there wasn't any software telling them what to do!

I tried doing some conversion factors and came up with this: (0.101g Mg)(1mol MgO) |(40.31g MgO) ---------------------- (24.31g Mg)|(1mol MgO) =~0.167g MgO as my theoretical yield if I had a mass of 0.101g of Mg Did I do this correctly?

So I can just say for example, plug values as y gets closer to 1 and solve for the function and notice that the function is getting smaller and smaller (negative) and therefore negative infinity?

How did that h on the left right below "subtract" come from??

Yes I know the definition of the derivative, I think I'm just confused on the algebra part. x+h - 1/(x+h) Just that left side of the equation is where I'm lost. It went from that to h-1/(x+h) Did that x just got canceled out from the left hand side? Other...

.. the minus made the x from the right side which forces those two to cancel out. I'm totally overlooking this problem than it needs to be. Thanks for helping me clarify a rather simple problem!

At first I said x=-3 but that is a vertical asymptote, not a vertical tangent. Where does this graph have vertical tangents in this case?

Or near x=2, that was pretty easy, can't believe I didn't spot it at first

Btw, KHP is Potassium hydrogen phthalate C8H5KO4

Yes I know the formula of molarity M=mol/L but the volume of water is not accounted for in this calculation specifically since the volume we're using is the volume of NaOH solution dispensed into the flask. Therefore, water shouldn't have an effect on the...

DrBob222 you're exactly right on 2! Sorry my teacher didn't really clarify exactly what was being asked but I took on the question like how #2 is stated, and therefore said that the molarity of the NaOH wouldn't be affected by the amount of water added pr...

Finally figured out, simply plug the given x value into the original equation!

This leaves with dy/dt=12(-.75/8) dy/dt=-1.125 dy/dt=-9/8

It looks like it's the same answer, but how we got to it was different. With your equation, that's what I would take on for this lab, but my chemistry teacher warned us a million times to NOT do it that way, don't know why, but she wanted us to do it the...

Maybe my derivative isn't correct in the first place? I used the quadratic formula to solve for x and got x being equal to -1 but when I plug that into the equation I get 0/0, which certainly means I'm doing something wrong. Any ideas?

Any ideas anyone? I need to have this turned in by tomorrow, any help is greatly appreciated