Jerry

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

Questions

The following questions were asked by visitors named Jerry.

I'm in a Grade 12 Data Management Course. The Current unit is Factorials and Permutations. I'm having a trouble with this question. The answer is suppose to be 120 but I don't know how. How many different ways can 6 people be seated at a round table? Expl...

Describe the climate and physical characteristics of that biome and the types of organisms that live within it. Give examples of and describe symbiotic relationships between those organisms. Be sure to include at least one example from each of the followi...

A current of 2.50 A is passed through a solution containing Cu+2 ions for 4.00 hours. Calculate the mass of Cu atoms that form at the cathode. Charge= current*time Convert the charge in coulombs to number of electrons. Since it takes two electrons per Cu+...

In 1992, the life expectancy of males in a certain country was 69.8 years. In 1999, it was 72.6 years. Let E represent life expectancy in year t, and let t represent the numbers of years since 1992.

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling 40 miles per hour. Train B is traveling 48 miles an hour. Train A passes a station at 10:25 pm. If train B passes the same station at 10:55 pm, at what time will t...

What does copper react with when heated and what is formed as a result? (When you put copper underneath a fire, would the copper be reacting with oxygen or carbon dioxide?)

A 156.5 g piece of stainless steel was heated to 510 C and quickly added to 25.11 g of ice at -30 C in a well-insulated flask that was immediately sealed. What will be the final temperature of the system if there is no loss of energy to the surroundings?...

Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that people should spontaneously follow a 24- hour cycle of sleeping and walking- even if they are not exposed to the usual pattern...

Twenty students randomly assigned to an experimental group receive an instructional program: 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the test(with an estimated pop...

Do students at various colleges differ in how sociable they are? Twenty-Five students were randomly selected from each of three colleges in a particular region and were asked to report on the amount of the time they spent socializing each day with other s...

Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test(high scores mean more anxiety) The scores are as follows.

Factor: 4x^2-12x+9

Find the sum of all n exterior angles of a n-sided convex polygon, where n is any positive integer larger than 3. Show all the working details and reasons. I already know that the total is 360 degrees, but how would I use mathematical proof to figure it o...

What are some of the health problems associated with undernutrition? Explain the cycle of malnutrition. Who does it impact? Explain your answer.

For the reaction: H2(g) + I2(g) 2HI(g) , Kc = 12.3 at some temperature T. If [H2] = [I2] = [HI] = 3.21 x 10-3 M at this temperature, which one of the following statements is true? 1. ) Not enough information is given to answer the question. 2. ) The conce...

Twenty-seven students averages 70 on their midterm. Could 21 of them have scored about 90?

product of 45% and some number

Working alone it takes Jerry 9 hrs to mop a warehouse. Ruth can mop the same warehouse in 10 hrs. If they worked together how long would it take them?

Need to create a poster describing the persuasive technique bandwagon. How do I do it?

A grocer gets food from three suppliers. They deliver every 5 days, 6 days and 7 days, respectively. All three came today. When will they all deliver on the same day again?

How do you do this? y-5/y+2 = 1/7

Help! g/r+g - g/r-g

what is x squared plus 12x plus 11 equals

I conducted the synthesis of an Alum experiment in my lab last week and I'm working on my report. I'm almost done expect I don't know how one could increase the yield of the product (alum crystal)? And also what is the point of adding sulfuric acid? Can a...

give exact and approximate solutions to three decimal places (x-5)sq = 18

please help! The width of a rectangle is 4ft less than the length. The area is 12 ft sq. Find the length and the width.

solve for x x+1/x=-7/x-12

How do I calcualte and what would my titration curve look like for a 25mL 0.1M H3PO4 solution titrated with 0.1M NaOh. The problem involves Ka and pKa values which i have, not sure how to use this information and make a graph out of it?

Factor completely 112r^2+392rp+343p^2 Please help

Find the GCF -30a^4, 5a^5

g(x) = 6 ___ 8-3x is the domain {x|x real number and ? = 0 >=8/3 = 8/3 =6 My answer is >= 8/3 I hope I am right!

-2x> 1/9 This is multiplication -2/1 +1/2x > 1/9 +1/2 {x|x < 1/11 Is this correct?

z+y for z = 39 and y=11 __ 10 simplify 39 +11 ______ 10 this is correct?

soybean meal is 12 % protein and corn bean meal is 6%protein what it takes to make 240 IB mixture 7% protein?

How does the project audit differ from the performance measurement control system?

Nine rights are necessary to purchase one share of Fogel stock at $50. A right sells for $4. The ex-rights value of Fogel stock is

When heated, lithium reacts with nitrogen to form lithium nitride: 6Li+N2 --> 2Li3N What is the theoretical yield of Li3N in grams when 12.4 g of Li is heated with 33.9g of N2

A beaker contains 250.0 mL of a 1.00 M HCl solution. How many moles of the acid would remain in the solution after 0.199 moles of HCl are neutralized?

A 1.009-g mixture of the solid salts Na2SO4 (molar mass=142.04g/mol) and Pb(NO3)2 (molar mass=331.20g/mol). The precipitate was filtered and dried, and it mass was determined to be 0.471 g. The limiting reactant was determined to be Na2SO4. a. write the m...

Why is it important to learn what sample size was used in a study in which no statistica difference was found?

A baseball, hit 3 feet above the ground, leaves the bat at an angle of 45' and is caught by an outfielder 3 feet above the ground and 300 feet from home plate. What is the intitial speed of the ball, and how high does it rise? So far i have got a few form...

100= 1/2 50 v* v=? *squared* 10=(50-v)/4 v=?

A hot-air balloon is rising straight up with a speed of 5 m/s. A ballast bag is released from rest relative to the balloon when it is 8.2 m above the ground. How much time elapses before the ballast bag hits the ground? I don't get what equations or what...

Oxidation State numbers For Fe3+ i got 3+ b/c Oxidation state monatomic ion = ionic charge and i got that answer wrong. i am receiving wrong answers for these below aswell. I used these rules for the following -Alkali metals are always +1; alkaline earths...

Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NOREACTION. Are my answers below correct? I used the textbook 1. sodium chloride and lead (II) acetate 2,po...

How to solve the equation: 36x-15y+50z=-10 2x+25y=40 54x-5y+30z=-160

A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and -q (lower left corner). The net electric field at the (empty) upper right...

I don't understand how to set up the triple integral for #26. LINK: h t t p : / / g o o . g l / 5 k C L

I'm not sure how to do #22. LINK: h t t p : / / g o o . g l / P 0 S e

a)Approximate root 26 by using the linearization of y= root x at the point (25,5) Show the computation that leads to your conclusion. b)Approximate cube root of 26 by using an appropriate linearization. Show the computation that leads to your conclusion.

Complete the table below: Enter all letters containing appropriate descriptions for each of the equations below. a. precipitation reaction b. neutralization reaction c. oxidation reduction reaction d. molecular equation e. complete (total) ionic equation...

How do you dilute 100mL of 20ppm Fe3+ to 1,2,4,6,8 ppm, 50mL each?

a driver of a car going 95.0km/h suddenly sees the lights of a barrier 35.0 m aheadd. It takes the driver 95 s before he applies the breaks, and the average acceleraion during breaking is -10.om/s/s does the car hit the barrier?

how many half-lives of radon-222 have passed in 11.46 days?

The Lifetimes of a certain brand of photographic light are normally distributed with the mean of 210 h and a standard deviation of 50 h. What percent of lights will need to be replaced within 233 h? Out of 2000 lights, how many will have a lifetime betwee...

A compound is 54.52% C, 9.15% H, and 36.32% O by mass. What is the empirical formula? The molecular mass of the compound is 132 amu. What is the molecular formula?

Complete combustion of 8.00 g of hydrocarbon produced 26.0g of CO2 and 7.99g of H2O. What is the empirical formula for the hydrocarbon?

Calculate the percent composition by mass of each element in Al(OH)3 Use at least 3 significant figures. %Al = %O = %H=

how many grams of F are in 335 g of CaF2?

What is the empirical formula of a compund composed of 3.25% hydrogen(H), 19.36% carbon(C) and 77.39% oxygen(O) by mass?

An unknown compound contans only C, H, and O. Combustion of 5.70 g of this compound produced 11.4g of CO2 and 4.66g of H2O. What is the empirical formula of the unknown compound? CHO

100 students were asked whether they are taking psychology or biology. 61 were taking pyschology, 18 were taking both and 12 were taking neither. how many were taking biology?

08/09/2005 Physics A crane is lifting a 200 pound object. The crane boom is 50 ft long. The boom forms an 85 degree angle with the horizontal. What is the torque applied to the crane boom?

Suppose the time it takes for a purchasing agent to complete an online ordering process is normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes. Suppose a random sample of 25 ordering processes is selected. The standard devi...

a machine fills containers with a standard deviation of filling weights of 1.5. calculate the mean weight if only 4 % of the containers hold less than 19 ounces

Answer the following questions for a mass that is hanging on a spring and oscillating up and down with simple harmonic motion. Note: the oscillation is small enough that the spring stays stretched beyond its rest length the entire time. Options for each q...

Which of the following reactions have a positive ΔSrxn? Check all that apply. A(g) +B(g) -----> 3C(g) A(g)+ B(g)------> C(g) 2A (g) +2B (g)-----> 3C(g) A(s)+B(s)------> C(g) I picked the first one and it marked me wrong. Please help(:

When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. O2M(s) ----> M(s) +O2(g) delta G= 288.9 Kj/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What i...

A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by ATP(aq) +H2O (l) --->ADP(aq) +HPO4^2- for which Δ...

Find the frequency in Hertz (Hz) for the following situations: a) a basketball team scores 40 points in 300s b) a tuning fork vibrates 2000 times in 2s c) a boat bobs up and down 20 times in 5 minutes

Statements P->Q, ~R->(S->T), R v(P v T), and ~R are true. What is the truth value for the statement, (Q v S)?

Which has a subject complement? A) The day ended with many surprises B) We can't leave without seeing her. C) The nurse felt my pulse D) I felt much better

What mass in kilograms of E85(d = 0.758g/mL) can be contained in a 11.5gal tank?

On January 1, 2011 you bought a two-year U.S. government bond with a principal (face value) of $1000 and a coupon rate of 6% with coupons paid on December 31, 2011 and December 31, 2012. The principal will be repaid on December 31, 2012. The Consumer Pric...

From the edge of the rooftop of a building, a boy throws a stone at an angle 20.0° above the horizontal. The stone hits the ground 4.60 s later, 104 m away from the base of the building. (Ignore air resistance.) What is the maximum height H reached by the...

A 150g potato cools from 100 degrees Celsius to 50 degrees Celsius. If the specific heat capacity of the potato is 2000 j/kg degrees Celsius, how much heat does the potato lose?

A medieval city has the shape of a square and is protected by walls with length 550 m and height 16 m. You are the commander of an attacking army and the closest you can get to the wall is 100 m. Your plan is to set fire to the city by catapulting heated...

Large deposits of salt get into lakes in Utah due to what?

A spherical tank with radius of 5 feet is set on a coloumn 15 feet above the ground. How much work is required to fill the tank with water if the solution is pumped from ground level?

What is the degree 5 coefficient of the polynomial p(x)= x^2 (x+1) (x+3x^3 + 4x^4)?

Prove or disprove the following identity sin^4theta - cos^4theta = sin^2theta-cose^2theta

cos(X+pi/6) + sin(x-pi/3) = 0 I am working with one side but I am not sure if I can subtract at all here.

Cos(X+y)cos(x-y)= cos^2theta - sin^2theta I foiled the left side as a start because I can kind of see sin^2+cos^2=1 but I can't finish.

If an object with a density of 0.8 g/cc is placed in pure water is it correct that 80% of the object will be below the water line and 20% of the object will be above the water line?

Is it incorrect to use g/ml as the unit for the density of a solid object? I thought g/ml and g/cc were the same.

For the following reaction at a certain temperature: 2( ) 2( ) ( ) 2 H F HF g g g + it is found that the equilibrium concentrations in a 5.00 L rigid container are [H2]=0.0500 M, [F2]=0.0100 M, and [HF]=0.400 M. If 0.200 mol F2 is added to this equilibr...

Solve the equation cos^2A = sin^2A + sinA when 0¨¬¡A¡360¨¬. Select all the solutions from the list below. A. 330 degrees B. 270 degrees C. 150 degrees D. 30 degrees

Fred decides that 12+40=62 is NOT a true equation.Is Fred correct?Explain.

Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is 1 if a < 0.

a man has a roll of 200m copper wire, he wires on room using 17m, and the next room using 83m of copper wire. How many meters is left on the roll after he does the two rooms?

Hello, I hope all is well. I am hoping you can help. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -7x^2 + 6x + 3.

Hello, This one as well. Thank you! Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x^2 + 3x + 9.

Hi, I really need help with this one. Determine the equation of g(x) that results from translating the function f(x) = x^2 + 3 upward 12 units Thank you.

Please help. f(x) -6x-1 and g(x)=4x^2 Select the solution for(f+g)(x). Thank you.

What is your opinion of the idea that the dangers we face may lie beyond our understanding? I just need some idea's, please help me out. I'm not that good at writing essays.

Chocolate Box Company is going to make open-topped boxes out of 5 × 17-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to the nearest tent...

Solve the optimization problem. Minimize F = x^2 + y^2 with x + 2y = 15. Thank You for the help!!

Assume that it costs Apple approximately C(x) = 36,100 + 100x + 0.01x^2 dollars to manufacture x 30-gigabyte video iPods in a day. How many iPods should be manufactured in order to minimize average cost? What is the resulting average cost of an iPod? (Giv...

a four sided garden plot has an irregular shape. the second side is 12 feet longer than the first. the third side is 24 feet longer than the second. the fourth side is 36 feet longer than the third. if the perimeter of the plot measures 136 feet, what is...

Answers

The following answers were posted by visitors named Jerry.

For a dried flower arrangement, customers can choose from 2 types of containers, 3 sample designs, and 2 sizes. How many different arrangments does the shop offer? please post if possible in the by midnight tonight. Thank you

The answer is 1:30 AM Thank You

can not unscramble this math word mmttuoaeive

Who invented compass

In my experiment we produced KAl(SO4)2.12H2O

Thank you soo much. Was the last question not legible? I don't mean to be a pest Could you help me with this last one please. I worked it out i just want to see if i am correct. I really appreicate you help :( Write a complete ionic &net ionic , HC_2H_3O_...

My homework says that it is not formatted, are the phases ok? signs? it says it is wrong!! please help

There are 2pi radians per 360 degress. So take 312/180pi and you will have your radians.(5.4454 rad) or 26/15pi radians

I got p= 0.058447. Is this right. Also what do I do afterwards. I'm confused :(

okay when i plug it into 1.121-p...i get .537..i get how to do that. But i don't get when u say "add the partial pressure of each gas to find the total pressure in the container. " What do I add to .537. What partial pressure are u talking about? Sorry I'...

yes it is correct! thank you :) I really appreciate it!

DrBob222 please help?

I get .121 but it marked me incorrect and said "Since two moles of gas are produced for each mole of gas consumed, the final pressure should be greater than the initial pressure."

Why is it wrong?

Can someone please answer? :) I really need help. It marked me incorrect and said ""Since two moles of gas are produced for each mole of gas consumed, the final pressure should be greater than the initial pressure."

That's right! Thank you soooooo much! I really appreciate it!!!! You are the best (:

Yes it is correct! Thanks :)

Yes and I'm not getting it...what did u get?

I used that..its the change in Gibbs energy formula.

I got an answer of -33603.04727....does that sound right?

and is the above answer in kJ/mol...cause it needs to be those units.

I checked the answer and it marked me incorrect. I attempted this problem 3 times....can u please tell me the correct answer!!

yes it is correct! Thanks so much! You are the best!!!!!

Its actually -51.4! Thanks(:

It's fine! I really appreciate your help! :)

I thought frequency is 1/T . T as in Period. ..

You came up with everything I came up with. I, too, believe something must be incorrect. I met with my professor today, and showed him my 25+ pages of attempts at solving it. He didn't want to go through the whole thing, but said it had to do with focusin...

Since the annual interest is 3%, multiply the principle by 1.03 to get the amount of the principle plus the interest earned. Then, just use the new principle amount. Here's the amounts for 10 years. 1st year - $300.00 x 1.03 = $309.00 2nd year - $309.00 x...

a. Cost = $30.00 + h x $x $30 initial fee plus number of hours times the cost per hour. b. The value of the dimes can be written as $0.10 x d (the number of dimes). The number of nickels can be written as 4 times the number of dimes (4d) but the value is...

With your equation, my vertical and horizontal answers are correct, however the equation for T is wrong. Any other suggestions?

Im sorry but what is the equation to use t in? Im confused by your wording.

(E) none of the above

Rewrite 2sqrt(x) - (1/x) into exponents of x (eg x^2), and then take the derivative of each part of the equation.

My choices are evaporation and condesenation

JM=MK=JK/2 x/8 = (3x/4-6)/2 x/8 = (3X/4-24/4)/2 x/8 = 3x/8 - 24/8 x = 3x - 24 x-3x = -24 -2x = -24 x = 12 12/8 = 1.5 = JM = MK

The base length, the screen height and the screen diagonal form a right-angle triangle. Therefore, you can use pythagorean theorem to calculate screen height: sqrt(40**2 - 32**2) = 24.0 Then surface is length by height: 32 * 24 = 768

CORRECTION: Suppose X is a random variable and Y = aX + b is a linear function of X. Show that the correlation of X and Y is -1 if a < 0.

cor(X,Y) = cov(X,V) / sqrt(var(X)* var(Y))

Thanks a lot! my mind opened up more for this topic, i can see the light.

Bob what do you mean by Evolutionary mutation? Can you explain that a but more please.

How many 3by3 tile would it take to install a 12by18 floor.

Damon, thank you! But i tried entering it in but it said it was wrong. Also it wants the answer in inches cubed (in^3)

Wow thank you so much!!!!

Ahhh okay my bad. Thank you!!!

Thank you very much Steve.

It may sound weird because its written in first person, but its an assignment. But thanks anyway

Just any interpretation of what a venomous snake bite represents in a dream would be helpful. Thanks

Two pipes can be used to fill a pool, working together the two pipes can fill the pool in six hours. The larger pipe can fill the pool in three hours less time than the smaller pipe can alone. Find the time to the nearest tenth of an hour it takes for the...

yes you are correct. the equation for photosynthesis: 6 CO(2) + 6 H(2)O + energy --> C(6)H(12)O(6) + 6 O(2) ^ the above equation basically says Carbon Dioxide + Water + energy ---yields---> glucose + oxygen the carbon dioxide gets reduced to glucose (gain...

Ten in each hundred 110 111 etc 210 211 etc 90

The English settlement of Virginia, or the Jamestown colony. And during the early 1600s

So why did they want to hide their colony?

Still don't see it

OHHHHHHH. Was it because they didn't want to get their colony taken over by the Spanish, so they kept their colony hidden for this reason?

I know, but what was their reason for going west. Remember that this takes place during the mid-1600's.

Could it also be because they wanted to avoid the English and Dutch colonies?

OH. So it was for more land and riches, not to avoid other groups.

Sorry, I couldn't resist.

ok but ill never use jiskha again. :( thanks for nothing

Use the given information to determine the exact trigonometric value of csc(theta) if cot(theta)=-8 and 3pi/2 < theta < 2pi

U got all the answers right

A hardened criminal and checkoutlions

saac's law says, T(t) = Ta + (Ts - Ta)e^kt where Ta is the room temp Ts is the temp of the object and t is the time T(6) = 72 + (173-72)e^(6k) 137 = 72 + 101e^6k 101e^6k = 65 e^6k = 65/101 6k = ln(65/101) k = ln(65/101)/6 = -.073455541.. (put in calculato...

1.C 2.O 3.C 4.C 5.C 6.C 7.O 8.C 9.O 10.C 11.C 12.C 13.C 14.C 15.C 16.O 17.C 18.C 19.C 20.C

Really? That's it?

What would I have to do then to find the price?

Helen is 30. Dale is 40.

The answer is B

Sorry I don not know

how about area?

1.B 2.D 3.D 4.C 5.D 6.B 7.D 8.A 9.A 10.C 11.B 12.A 13.A 14.A 15.B 16.C 17.A 18.B 19.A 20.B 21.D 22.A 23.D 24.A 25.D These are the correct answers for....... World History A unit 13 lesson 6 review and test: New Global Connections

a) (1,1) b) 1 c) 0.52 d) 1 e) is always the same as

B A D C C These are correct answers for the Connections Academy quiz. Your welcome(:

if the same goes for tangent ratio can i do 5/1.5 to get 73 degrees as well?

i understand now thank you damon!!

What type of Reaction is this? Not a redox because none of the oxidation numbers are changing, not an acid/base reaction... Any help here?

JOVANA IS CORRECT! 100%

The amount of quarts of 2% milk they need is 50 lawns.

No just gratitude and anticipation, and it's more of a script than a poem. And it's also vague.

A C A is correct!

Correct C C D B and B A A are 100%!!!

I 6 - (3d -5)I < = 14 I 6 - 3d +5I < = 14 I 11 - 3dI < = 14 -14 <= 11 - 3d < = 14 -25 <= - 3d <= 3 25/3 >= d >= -3/3 25/3 >= d >= -1 -1 <= d <= 25/3

5 minutes = 5*60 = 300 seconds. 300 seconds + 15 seconds = 315 seconds. (2/3)*315 seconds = 210 seconds = 3 minutes and 30 seconds.

Divide numerator and denominator by .04

The common ratio is (648/8)^(1/4) = 3 8*3=24 24*3=72 72*3=216 216*3=648

A = P * e^(rt) = 5500 * (2.71828^(.045*5)) = 6887.77

400 * (1-.29)^5 = 72.17