# Posts by Beth

Total # Posts: 852

**Separation processes**

The question is sort of vague. I would ask your professor in the morning as to the definition of "low". Personally I would say that it is just more difficult since it does not specify that the relative volatility is one, it is just low. That is just an opinion. Hope ...

**calculus**

I got -119/36 ft^2/sec... not really sure how I got that...

**calculus**

A ladder 13 feet long is leaning against the side of a building. If the foot of the ladder is pulled away from the building at a constant rate of 8 inches per second, how fast is the area of the triangle formed by the ladder, the building, and the ground changing in feet ...

**utd**

A particle is moving around the ellipse 4x^2+16y^2=64 . At any time t, its x- and y coordinates are given by x(t) = 4cos t and y(t)= 2sint . At what rate is the particle’s distance to the point (1,1) changing at any time t? At what rate is the distance changing when t=pi/6?

**MATH**

I need help with a word problem. How many halves are there in two-fifths? 2/5 ÷ 1/2 = 4/5, so there are 2 halves is this correct

**MATH**

Please I need help with a fraction word problem. Peter and Eric bought a large pizza that has 12 slices. John and Eric ate all the pizza. If John ate 4/6 slices, how much did Eric eat? Who ate more pizza? My answer is Eric ate 4/12 of the pizza and John ate more than Eric. Am ...

**history**

Which of the following distinguished the Middle Colonies from New England and the Southern Colonies? A. peace treaties with Native Americans B. representative government C. prohibition of slavery D. ethnic and religious diversity

**Math Help!**

Oh I see, thank you so much for your help! You are so kind and very good at explaining.

**Math Help!**

#6?

**Math Help!**

Thank you reiny, makes sense! Can you help me with #5 too? Or the rest is you can?

**Math Help!**

Wow nice explanation thank you! Do you think you could help me with #1 and 5? These two questions are the ones I am most stuck o

**Math Help!**

I apologize for all these questions but I really need to get them done fast so I appreciate if you tried to answer some of them! 1. Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars ...

**Math**

Ok thank you! What about the second question I posted?

**Math**

Oh and another math question: If 45 is the sum of n consecutive positive integers, what is th largest possible value of n? I want to know how these 'consecutive numbers' questions work, like how do I list them in my equation?

**Math**

Every hour a clock chimes as many times as the hour. For example, the clock chimes 4 times at both 4:00 am and 4:00 pm. How many times does it chime from 4:00am through 11:00 pm of the same day including 4:00 am and 11:00 pm.? What is the proper way of doing this question ...

**Math**

Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars than the amount he put in on the previous day. After 10 days he has put 200 dollars in the jar. How much money did he pit in the jar on...

**Math**

t=2x-y+5 t=y-2z+10 t=2z-2x+6 Based on the system of equations above, what is the value of t?

**Chemistry**

Calculate the ΔHrxn for the following reactions using the heats of formation given in the table at the end of this assignment: a)The complete combustion of methane, CH4, producing water as a liquid. b)The complete combustion of glucose, C6H12O6, producing water as a ...

**math**

A tower casts a shadow 11 feet long. The distance from the top of the tower to the end of the shadow is 61 feet. how many feet tall is the tower? 61Squared = 11squared = h squared 3721 = 121 + h squared -121 = -121 3600 = h squared I get stuck at this point. Please help!

**science**

I don't know

**Physics**

An artillery shell is fired at an angle of 67.4◦ above the horizontal ground with an initial speed of 1860 m/s. The acceleration of gravity is 9.8 m/s2 . Find the total time of flight of the shell, neglecting air resistance. Answer in units of min

**math**

a job pays a salary of $19,00 the first year. during the next 10 years the salary increases by 4% each year. what is the lifetime salary over the 11 year period?

**Statistics**

Suppose that hours of sleep per night for single adults between 30 and 40 years of age are normally distributed with a mean of 6.7 hours and a standard deviation of 1.1 hours. What proportion of adults sleep longer than 4.5 hours per night? (Report to 3 decimal places.)

**Math**

Currently you have $80 and your sister has $145. You decide to save $6 of your allowen e each week, while your sister spends her whole allowance plus $7 a week. How long will it be before you have as much money as your sister?

**calc**

f"(x)=10, f'(x)=3 f(0)=1/3 find f(1)

**Calc**

Suppose that we want to estimate the area under the graph of f(x)=X^2+x for x=1 and 3. What is the value of the estimate using four rectangles and taking the sample points to be left-hand endpoints?

**Math**

Beginning January 1, Community Hospital had 175 inpatient beds. On June 15, the bed count was increased to 200. The hospital provided 67,106 service days to inpatients and 68,012 service days to discharged patients. In addition, there were 9,601 admissions and 9,488 discharges...

**Math**

Thank You

**Math**

Ms. Sue, Each coder works 7.5 hours a day

**Math**

You are the coding Supervisor of a medium sized community hospital. You are staffed with 2 inpatient coders. Your current productivity level for your coders is 3 charts per hour. Your hospital discharges has increased to an average of 75 charts per day. How many staff members ...

**chemistry**

How many grams of CO2(g) are there in 81.0mL of the gas at 0.789atm and 30 ∘C?

**Geometry**

Line M bisects PQ at point R. If PQ = 11, draw a figure and find PR=

**ethics**

they can be overridden by more important duties in a given situation

**Math**

If your car gets 18 miles per gallon of gas, how many pints of gas will you need to take a 698 mile trip

**business stats**

Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that: (Use the poisson approximation to the binomial.)

**calculus**

When a hammer thrower spins, the hammer generates a circle with a radius of 5 feet. When thrown, the hammer hits a screen that is 50 feet from the center of the throwing area. Let coordinate axes be introduced. If the hammer is released at (-4, -3) and travels in the tangent ...

**math**

You randomly choose a natural number from 1-10. what is the probability that you choose a multiple of 2 or 3?

**Math**

Evaluate -3 *x^2+2*y^2 for x=-1 and y=4

**ap statistics**

1. a. mean equals= .7 and standard deviation is 0.0187. I don't know the rest...

**math (check answer plz)**

thank you!

**Trig**

A vertical pole stands on a 20° slope from 50 m down the slope from the pole the angle of elevation of the top of the pole is 35 degrees. How tall is the pole

**chemistry**

if I have the reaction Magnesium + Hydrochloric Acid -> Magnesium Chloride + Hydrogen Gas And I have to 'investigate the effect of the concentration of the acid on the volume of hydrogen gas produced in the above reaction', what would be expected to happen?

**Math**

Order from greastest to least -1 13/14 , -1.9 , -1 9/11, -1.95 show work

**accounting**

Bethany Link delivers parts for several local auto parts stores. She charges clients $1.65 per mile driven. She has determined that if she drives 2,400 miles in a month, her average operating cost is $.45 per mile. If Bethany drives 2,800 miles in a month, her average ...

**Math**

When camomile finished making a bracelet , it was 7.9 inches long what was the diameter?

**Algebra (Word Problem)**

Here's the word problem: You have a coupon for $50 off your camera purchase of $100 or more at Camera World. Write a function relating a camera's purchase price after coupon, y, to the retail price, x. Give the domain of this function. Here is what I have so far: y = ...

**Math**

A train leaves the station at noon. The train is 180mi from its destination at 12:45PM and 90mi from the destination at 2:15PM. 1. How far is the station from the destination? 2. At what time will the train reach the destination?

**Math**

Alex puts his spare change in a jar every night. If he has $11.09 at the end of January, $22.27 at the end of February, $44.35 in April, $75.82 in July, $89 in August, and $114.76 at the end of October, perform a linear regression on this data to complete the following items. ...

**Algebra (Graphing Calculator)**

When trying to perform a linear regression, my fx-9750II calculator doesn't give me the option of graphing once I put the info into lists. The options it gives me are "SRT-A", "SRT-D", "TOP", and "BTM", but no "GRAPH". I ...

**Algebra**

Mike’s father is twice as old as he is. Seven years ago, the father was 7 years less than thrice as old as Mike was. Find Mike’s present age.

**Algebra**

Ruffy is 34 as old as Orlie. Four years ago, Ruffy was 1 year more than 12 as old as Orlie. How old is each?

**English**

how about this: Although Emerson and Thoreau shared many of the same ideas, Emerson promoted the idea of self improvement whereas Thoreau maintained the idea that man should be content with who they are.

**English**

I need to write a comparative essay abput Ralph Waldo and Thoreau. I was wondering if i could have help with a thesis.

**English**

In "First Confession," Gran is best described as a A) flat character. B) round character. C) stock character. D) antagonist. In "First Confession," all of the following situations contribute to the humor created in the story by transforming a familiar event...

**Socials**

PLease help!!

**Socials**

1. A description of life in 17th century ENgland according to a member of the roundheads. 2. The roundheads views on civil rights. Thanks! :)

**3 grade math**

Use the digits 3, 7, 1, 5 to write a number that rounds to each of the following 2,000 3,500 6,000 7,400

**English**

I have to write an essay on a book I read, and I want the title of my essay to be something quoted from the book. But how would I write the title in MLA format; I can't put it in quotes can I? because wouldn't that indicate a chapter title or an article? If anyone ...

**Algebra**

On my last post I forgot to add that I need to know if they are inverses of each other.

**Algebra**

I did sorry about that but I have found the answer since then. I got it wrong when I submitted it but time was running out. However, I know the answer now but I still don't understand it at all.

**Algebra**

I have to solve an inverse function. f(x)=x+6 and g(x)=x+6 f(x)=1/4x,x is equal to or not equal to 0 g(x)=1/4x,x is equal to or not equal to 0 Please help me I have been on this one problem for hours and I can't get it. This one question will determine whether or not I ...

**medical billing and coding**

don't code the 40.11, the correct code is as you posted G8878

**math**

Katie Chalmers borrowed money from her credit union at 13.2% simple interest to buy furniture. If the loan was repaid in 2½ years and the amount of interest was $1,320, how much did Katie borrow?

**business math**

Interest= Principal x Rate x Time I=$230,000 x .13 x 30/360 I=$2491.666 Interest= $2491.67

**Hello? My math question was ignored?**

My math question was ignored!

**Math**

9(x+2)(x+1)-2(x+2)-4(x+1)=0 I'm in the middle of solving an equation. I know that you have to FOIL but how did they get 9(x^2+3x+2)-(4x+4)=0 ? I thought you distribute the 9 through (x+2)(x+1). and why is it (4x+4) instead of (4x-4) because -4 x 1 = -4 .... Please help me ...

**math**

no i did not

**math**

Universal Exporting has three warehouse employees: John Abner earns $422 per week, Anne Clark earns $510 per week, and Todd Corbin earns $695 per week. The company’s SUTA tax rate is 5.4%, and the FUTA rate is 6.2% minus the SUTA. As usual, these taxes are paid on the ...

**math**

Fran Mallory is married, claims five withholding allowances, and earns $3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance (both based on her...

**math**

Mary Jo Prenaris is an office manager with gross earnings of $1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo’s new biweekly gross earnings

**math**

Paul Warren is a self-employed mechanic. Last year he had total gross earnings of $44,260. What are Paul’s quarterly social security payments due to the IRS

**math**

Mitch Anderson is a security guard. He earns $7.45 per hour for regular time up to 40 hours, time-and-a-half for overtime, and double time for the midnight shift. If Mitch worked 56 hours last week, including 4 hours on the midnight shift, how much were his gross earnings

**math**

Barbara Sultan works 40 hours per week as a registered nurse. At the rate of $31.50 per hour, what are her gross weekly earnings

**Math**

Take 9,850 and multiply it by 6.2% you will get 610.70. then multiply 9,850 by 1.45% you will get 142.825. Add together the 610.60 + 142.825= 753.53 is the total that is withheld from Dans check.

**math**

Epicure Market prepares fresh gourmet entrees each day. On Wednesday, 80 baked chicken dinners were made at a cost of $3.50 each. A 10% spoilage rate is anticipated. At what price should the dinners be sold to achieve a 60% markup based on selling price

**math**

What was the original selling price of a treadmill currently on sale for $2,484 after a 20% markdown

**math**

If the markup of a fluorescent light fixture transformer is 120% based on the cost, what is the corresponding percent markup based on selling price

**math**

At The Luminary, the markup on a halogen light fixture is 50% based on selling price. What is the corresponding percent markup based on cost

**math**

Office Market is having a sale on printer paper. If you buy 2 reams for $8.99 each, you will get a third ream free. Calculate the markdown percent

**math**

The Flour Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?

**Math**

13/52

**math**

A flower shop buys roses with a list price of $1,500. If the wholesaler offers trade discounts of , find the trade discount amount to the nearest penny

**math**

The Empire Carpet Company orders merchandise for $17,700, including $550 in shipping charges, from Mohawk Carpet Mills on May 4. Carpets valued at $1,390 will be returned because they are damaged. The terms of sale are 2/10, n30 ROG. The shipment arrives on May 26 and Empire ...

**math**

What is the net price factor for trade discounts of 25/15/10

**chemistry**

What is the balanced equation for a reaction of iron with chlorine?

**Calculus**

Yes, had just finished getting it! Thanks!

**Calculus**

U substitution on indefinite integral/antiderivative. (t^3+4)^-2 t^2 On this should I use u on the parenthesis and should I put this into a natural log?

**math**

hermione puts $1000 into an account on january 1, 2008. if the account is compounded continuously at a rate of 7.9%, in what month of what year will the account reach $100,000? Is the correct answer January,2069?

**math**

what is the graph of y=-16t^2+8t+70

**physics**

An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. (a) What is the electric field energy density at P? (b) A parallel-plate capacitor whose plates have area 0.110 m2 has a uniform electric field between its plates with the same ...

**math**

A penguin swimming with the ocean current in search of food takes 1 hour to travel 9 miles. Its return trip upstream to its starting point takes it 3 hours, What is the penguin's speed in still water? Thanks.

**math**

Hello! I would be really grateful if you could help me with this word problem. Here is the problem: In a cartoon, a malfunctioning cannon fires a hungry coyote towards the bottom of a cliff with an initial rate of 100 feet per second. If the cliff is 1250 feet tall, how long ...

**Math**

Hello there! Could You please help me with this Geometry word problem? Here's the problem: Helen painted a picture that was 10 inches longer than it was wide. When she framed the picture, the outside dimensions (that is, the length and the width) were each two inches ...

**Math**

Hello there! Could You please help me with this Geometry word problem? Here's the problem: Helen painted a picture that was 10 inches longer than it was wide. When she framed the picture, the outside dimensions (that is, the length and the width) were each two inches ...

**math**

7/8 + 1/10 find the sum or difference. write the snswer in simplest form

**Algebra**

How do I write an equation of a line that passes through the point (-28, -5) and is parallel to y= -5 45 X - _ __ 8. 2

**Algebra**

How do I write an equation of a line that passes through the point (-31,22) and is parallel to this equation: 16x + 13y= -210

**Algebra**

How do I write an equation of a line that passes through the point (-31,22) and is parallel to this equation: 16x + 13y= -210

**Math**

Next door neighbors Moe and Larry are using hoses from each of their houses to fill Moe's pool. They know it takes 12 hours using both hoses. They also know that Moe's hose, used alone, takes 40% less time than using Larry's hose alone. How much time is required to...

**Math**

Because of an anticipated rainstorm, the water level in a reservoir must be lowered by 1 foot. Opening spillway A lowers the level by this amount in 4 hours, whereas Opening spillway B does the job in 6 hours. How long will it take to lower the water level by 1 foot if both ...